Question

10 x + 2Y - 2x = 176 sendo Y = 80​

Answer 1

10x + 2y - 2x = 176 , sendo y= 80

10x + 2 • 80 - 2x = 176

10x + 160 - 2x = 176

10x - 2x = 176 - 160

8x = 16

x = 16/8

x = 2

( y= 80 , x= 2)

Answer 2

Olá!

$10x + 2y - 2x = 176, \: sendo \: \: y = 80 \\ 10x + 2 \times 80 - 2x = 176 \\ 10x + 160 - 2x = 176 \\ 8x = 176 - 160 \\ 8x = 16 \\ x = \frac{16}{8} \\ \\ \boxed{x = 2}$

Espero ter ajudado! :)