Question 111545: 20-6x= -4(2x-1)+2
and
3(5x-9)-x= -12+4x
i've answered the first problem already but i'd like to see if you end up with the same answer but i seem to not be able to answer the second problem. Thank you for your time and i greatly appreciate your help!
Answer by brandonpark2889(31)   (Show Source):
You can put this solution on YOUR website! 20-6x= -4(2x-1)+2
and
3(5x-9)-x= -12+4x
i've answered the first problem already but i'd like to see if you end up with the same answer but i seem to not be able to answer the second problem. Thank you for your time and i greatly appreciate your help!
Okay, i see. It can be a little difficult, but try to follow where i'm going. If you have questions, email me at brandonpark2889@msn.com.
1st one: 20-6x = -4(2x-1)+2.
First, use the distributive property to multiply -4 to 2x and -1, turns out to be 20-6x = -8x+4+2.
Secondly, combine all the like terms, which is +4 and +2. 20-6x = -8x+6.
Third, subtract 6 on each side, using subtractive property of equation/equality, ending up with: 14-6x = -8x.
Fourth, add 6x on each side, using additive property of equation/equality, ending up with: 14 = -2x.
Fifth, divide -2 on each side, using division property of equation/equality, ending up with x = -7.
Check by putting -7's instead of x's, and see if two sides are equal.
I know, it's little complicated, at least how i wrote it down. But if you have problems, feel free to email me.
2nd one: 3(5x-9)-x= -12+4x.
First, again use the distributive property to multiply 3 to 5x and -9, turns out to be 15x - 27 - x = -12 + 4x.
Second, combine all the like terms, which is 15x and -x: 14x - 27 = -12 + 4x.
Third, add 27 to each side, using additive property of equation/equality, which equals: 14x = 15 + 4x.
Fourth, subtract 4x to each side, using subtractive property of equation/equality, which is: 10x = 15.
Finally, divide 10 on each side, using division property of equation/equality, which x = 1  .
I hope that you gotten what i have explained. again, feel free to email!
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Good luck; math is more than just memorizing!
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