Question

B)8 - 2(x + 5) = 5
C)3(y-1)-4(y-2)=6
Com calculo prfv

Answer 1

Explicação passo-a-passo:

B)8 - 2(x + 5) = 5

8-2x-10=5

-2x-2=5

-2x=5+2

-2x=7

x=7/-2

x=-7/2

C)3(y-1)-4(y-2)=6

3y-3-4y+8=6

-y+5=6

-y=6-5

-y=1

y=-1/1

y=-1

ok!

Answer 2

$8 - 2(x + 5) = 5 \\ 8 - 2x - 10 = 5 \\ - 2 - 2x = 5 \\ - 2x = 5 + 2 \\ - 2x = 7 \\ x = - \frac{7}{2}$

$3(y - 1) - 4(y - 2) = 6 \\ 3y - 3 - 4y + 8 = 6 \\ - y + 5 = 6 \\ - y = 6 - 5 \\ - y = 1 \\ y = - 1$