Question

8-Resolva a equação abaixo:X + 5 = 20 - 4x
O a) 3
Ob) 5
O c) 10
O d) 15
N​

Answer 1

$\sf x + 5 = 20 - 4x \\ \\ \sf x + 4x = 20 - 5 \\ \\ \sf 5x = 15 \\ \\ \sf x = \frac{15}{5} \\ \\ \sf{\color{lime} \underline{x = 3}}$

Att: Nerd1990

Answer 2

Olá!!!

$x + 5 = 20 - 4x \\ x + 4x = - 5 + 20 \\ 5x = 15 \\ x = 15 \div 5 \\ x = 3$

ATT:MIRANDA ;)