Question

A)3x+18=2x+36 pergunta
B)7x+21=3x+53 pergunta
C)10x-18=4x+36 pergunta
D)8x+19=x+5 pergunta

Answer 1

Resposta:

$a)3x + 18 = 2x + 36 \\ 3x - 2x = 36 - 18 \\ x = 18 \\ \\ \\ b)7x + 21 = 3x + 53 \\ 7x - 3x = 53 - 21 \\ 4x = 32 \\ x = 32/4 \\ x = 8$

$c)10x - 18 = 4x + 36 \\ 10x - 4x = 36 + 18 \\ 6x = 54 \\ x = 54/6 \\ x = 9 \\ \\ \\ d)8x + 19 = x + 5 \\ 8x - x = 5 - 19 \\ 7x = - 14 \\ x = - 14/7 \\ x = - 2$