Question

x=2(90-x) qual a resposta

Answer 1

X=2 (90-x)
X= 180-2x
X+2x=180
3x=180
X=180÷3
X=60

Answer 2

x= 2.90 - 2x (por conta da distribuitiva)
x= 180 - 2x
x + 2x = 180 (isolando o x)
3x = 180
x= 180/3
x= 60.