Question

a) 2x+7-3(x+4)=-4x-2(3-x)
b) 4x+7+5(x+3)=6x+1

Answer 1

Răspuns:

Explicație pas cu pas:

a)2x+7-3(x+4)=-4x-2(3-x)

2x+7-3x-12=-4x-6+2x

7-3x-12=-4x-6

-5-3x=-4x-6

-3x+4x=-6+5

x=-1

b)4x+7+5(x+3)=6x+1

4x+7+5x+15=6x+1

9x+22=6x+1

9x-6x=1-22

3x=-21

x=-21:3

x=-7

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