Question

2*(3-x)+7 (2-x)=15-4x​

Answer 1

Resposta:

$x = 1$

Explicação passo-a-passo:

$2(3 - x) + 7(2 - x) = 15 - 4x \\ 6 - 2x + 14 - 7x = 15 - 4x \\ - 2x - 7x + 4x = 15 - 6 - 14 \\ - 9x + 4x = 9 - 14 \\ - 5x = - 5 \: \color{red} { \cdot( -1 ) } \\ 5x = 5 \\ x = \frac{5}{5} \\ \bf{x = 1}$

Answer 2

Explicação passo-a-passo:

2×(3-x)+7×(2-x)=15-4x

2×3=6 2×(-x)= -2x

7×2=14 7×(-x)= -7x

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

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

-5x= -5 ×(-1)

5x=5

X=5÷5

X=1