Question

x/2 = -5

j) 7.(x-1) = 2.(3x+1)

k) 2x + 14 = 5x - 1

l) 2.(3 - y) + 7.(2 - y) = 15 - 4y

Answer 1

Explicação passo-a-passo:

x/2=-5

x=2•-5

x=-10

J)7.(x-1)=2.(3x+1)

7x-7=6x+2

7x-6x=2+7

x=9

k)2x+14=5x-1

2x-5x=-1-14

-3x=-15 ×(-1)

3x=15

x=15/3

x=5

l)2.(3-y)+7.(2-y)=15-4y

6-2y+14-7y=15-4y

-2y-7y+4y=15-6-14

(-2-7+4).y=-5

-5y=-5 ×(-1)

5y=5

y=5/5

y=1

Answer 2

Resposta:

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Explicação passo-a-passo:

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