julieberryman
julieberryman
21-01-2017
Mathematics
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-4 (2x +1) - (x-2) = -11
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apologiabiology
apologiabiology
21-01-2017
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a(b+c)=ab+ac
-4(2x+1)-1(x-2)=-11
-4(2x)-4(1)-1(x)-1(-2)=-11
-8x-4-x+2=-11
-9x-2=-11
add 2 to both sides
-9x=-9
divide both sides by -9
x=1
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