Question

a) 4(x + 10 = 12
b) 3 (x - 4) = 9
c) 6 (x - 4) = - 12

me ajudem pfvv
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Answer 1

Resposta:

a) 4(x+10)=12

4x+40=12

4x=12-40

4x=-28

x=$\frac{-28}{4}$

x=-7

b) 3(x-4)=9

3x-12=9

3x=9+12

3x=21

x=$\frac{21}{3}$

x=7

c) 6(x-4)=-12

6x-24=-12

6x=-12+24

6x=6

x=$\frac{6}{6}$

x=1