document.write( "Question 499875: a=-4, b=2, c=-3
\n" ); document.write( "1)5b-(a+c)
\n" ); document.write( "2)100(2b+a)\r
\n" ); document.write( "\n" ); document.write( "Please explain every step.\r
\n" ); document.write( "\n" ); document.write( "thank you \n" ); document.write( "
Algebra.Com's Answer #338347 by Flannery(124)\"\" \"About 
You can put this solution on YOUR website!
Substitute numbers for variables:
\n" ); document.write( "5(2)-(-4+(-3))=
\n" ); document.write( "Work from the inner most parentheses outward:
\n" ); document.write( "(-4+(-3)) is the same as -4-3 because the addition of a negative number is a subtraction. So (-4+(-3)) is (-4-3). Now we have:
\n" ); document.write( "5(2)-(-4-3)=
\n" ); document.write( "Distribute the implied negative one. Multiplying two negative numbers always results in a positive answer. So -1(-4-3) is 4+3. We now have:
\n" ); document.write( "5(2)+4+3=
\n" ); document.write( "Finish removing parentheses by multiplying five and two:
\n" ); document.write( "10+4+3=
\n" ); document.write( "10+7=
\n" ); document.write( "17
\n" ); document.write( "Same again:
\n" ); document.write( "100(2times2+(-4))= one hundred times (two times two plus (negative four))
\n" ); document.write( "Innermost parentheses first. Adding the negative four means subtracting four.
\n" ); document.write( "100(2times2-4))=
\n" ); document.write( "100(4-4)=
\n" ); document.write( "finish ding what's in the parentheses:
\n" ); document.write( "100(0)=
\n" ); document.write( "0
\n" ); document.write( "The trick is to do your parentheses in order from innermost to outermost and to know when to change the signs.
\n" ); document.write( "I change signs first if needed, then distribute if needed,and then do remaining operations within the parentheses.
\n" ); document.write( "These answers were checked by Microsoft Mathematics. \n" ); document.write( "
\n" );