Question

resolva a equação -3 (x - 5) -2 (2 x + 1) = - 8

Answer 1

Resolva a equação -3 (x - 5) -2 (2 x + 1) = - 8
$-3\cdot(x - 5) -2\cdot(2 x + 1) = - 8\\ \\-3x +15 -4x -2 = - 8\\ \\-3x -4x = - 8-15+2\\ \\-7x = -21\\ \\x =\frac{-21}{-7}\\ \\x=3\\ \\S=\{3\}$