Question

Equação

Resolva corretamente :

A) 3x = - 7 + ×

B) 11 - 3x = 2

C) 0,8 + 2x = x + 3,5

Answer 1

A) $3x = -7 + x$

$3x - x = -7$

$2x = -7 / 2$

$x = - 7/2$

B) $11 - 3x = 2$

$-3x = 2 - 11$

$-3x = 9 / -3$

$x = 3$

C) $0,8 + 2x = x + 3,5$

$2x - x = 3,5 + 0,8$

$x = 2,7$