document.write( "Question 70869: Please help me solve this equations
\n" ); document.write( "1. 12+(x-9)=3(x-2)\r
\n" ); document.write( "\n" ); document.write( "2. 1/5x-2=2/5x+4\r
\n" ); document.write( "\n" ); document.write( "3.2x-3(x+4)=2(x-5)\r
\n" ); document.write( "\n" ); document.write( "4.3/7x+5=5/7x-1\r
\n" ); document.write( "\n" ); document.write( "5. 2x-7(x-2)=3(x-4)
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Algebra.Com's Answer #50795 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
1.
\n" ); document.write( "12 + (x-9) = 3(x-2)
\n" ); document.write( "12 + x - 9 = 3x - 6; multiply what's inside the brackets, remove the brackets
\n" ); document.write( "x + 3 = 3x - 6
\n" ); document.write( "x - 3x = - 6 - 3
\n" ); document.write( "-2x = -9
\n" ); document.write( "2x = + 9; multiplied equation by -1
\n" ); document.write( "x = 9/2
\n" ); document.write( "x = 4.5
\n" ); document.write( ":
\n" ); document.write( "Check by substitution for 4.5 for x
\n" ); document.write( "12 - 4.5 = 3(2.5)
\n" ); document.write( "7.5 = 7.5
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\n" ); document.write( "2.
\n" ); document.write( "(1/5)x - 2 = (2/5)x + 4
\n" ); document.write( "5(1/5)x - 5(2) = 5(2/5)x + 5(4); multiply by 5 get rid of the denominators
\n" ); document.write( "x - 10 = 2x + 20
\n" ); document.write( "x - 2x = 20 + 10
\n" ); document.write( "-x = 30
\n" ); document.write( "x = -30; multiplied equation by -1
\n" ); document.write( ":
\n" ); document.write( "Check: -6 - 2 = -12 + 4
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\n" ); document.write( "3.
\n" ); document.write( "2x - 3(x+4) = 2(x-5)
\n" ); document.write( "2x - 3x - 12 = 2x - 10; multiplied what's inside the brackets
\n" ); document.write( "2x - 3x - 2x = -10 + 12
\n" ); document.write( "-3x = 2
\n" ); document.write( "3x = -2
\n" ); document.write( "x = -2/3
\n" ); document.write( ":
\n" ); document.write( "Check:
\n" ); document.write( "-4/3 - 3(10/3) = 2(-17/3)
\n" ); document.write( "-4/3 - 30/3 = -34/3
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\n" ); document.write( "4.
\n" ); document.write( "(3/7)x + 5 = (5/7)x - 1
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\n" ); document.write( "Multiply equation by 7 and you have:
\n" ); document.write( "3x + 35 = 5x - 7
\n" ); document.write( "3x - 5x = - 7 - 35
\n" ); document.write( "-2x = -42
\n" ); document.write( "2x = 42; multiplied by -1
\n" ); document.write( "x = 42/2
\n" ); document.write( "x = 21
\n" ); document.write( ":
\n" ); document.write( "Check: 9 + 5 = 15 - 1
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\n" ); document.write( "5.
\n" ); document.write( "2x - 7(x-2) = 3(x-4)
\n" ); document.write( "2x - 7x + 14 = 3x - 12
\n" ); document.write( "2x - 7x - 3x = -12 - 14
\n" ); document.write( "-8x = -26
\n" ); document.write( "8x = 26
\n" ); document.write( "x = 26/8 or 13/4
\n" ); document.write( ":
\n" ); document.write( "Check using decimal 13/4 = 3.25
\n" ); document.write( "6.5 - 7(1.25) = 3(.75)
\n" ); document.write( "6.5 - 8.75 = -2.25
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\n" ); document.write( "can you do these by yourself now?
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