Question

Calcule o valor de y na equação: 4y/5 -7 = 2y/2 - 2​

Answer 1

$\frac{4y}{5} - 7 = \frac{2y}{2} - 2$

$10( \frac{4y}{5} - 7) = 10( \frac{2y}{2} - 2)$

$\backslash\!\!\!1\backslash\!\!\!0 \: . \: \frac{4y}{\backslash\!\!\!5} - 10 \: . \: 7 = 10 \: . \: \frac{\backslash\!\!\!2y}{\backslash\!\!\!2} - 10 \: . \: 2$

$8y - 70 = 10y - 20$

$8y - 10y = - 20 + 70$

$- 2y = 50 \: \: \: . \: ( - 1)$

$2y = - 50$

$y = - \frac{50}{2}$

$\boxed{y = - 25}$

Att. NLE Top Shotta

Answer 2

Resposta:

y= -25

Explicação passo-a-passo:

4y/5-7=2y/2-2

4y/5-7=y-2 m.m.c=5

4y-35=5y-10

4y-5y=-10+35

-y=25 ×(-1)

y= -25