Question

Me ajudem por favor to precisando bros ;-;

Answer 1

$Vamos \: lá : \: \\ a) \: 10 - 2x = 3x \\ 10 = 3x + 2x \\ 10 = 5x \\ x = \frac{10}{5} \\ x = 2 \\ b)x - 3 = 6 + 4x \\ x - 4x = 6 + 3 \\ - 3x = 9 \\ x = - \frac{9}{3} \\ x = - 3 \\ \: c) (7x - 8).2 = 6.(3x - 4) \\ 14x - 16 = 18x - 24 \\ 14x - 18x = 24 + 16 \\ - 4x = 40 \\ x = - \frac{40}{4} \\ x = - 10 \\ d) \: 16x - 6 - 7x = 15 + 2x \\ 16x - 7x = 15 + 6 \\ 9x = 21 \\ x = \frac{21:3}{9:3} \\ x = \frac{7}{3}$