Question

Resolva as equações:

a) 5x+10 graus = 70 graus
b) x+3x = 128 graus
c) 2x-10 graus = x+20 graus
d) 2x-5 graus +x = 4 graus

Answer 1

Resposta:

a)$5x=70^{o}-10^{o}\\x=\frac{60^{o}}{5}\\x=12^{o}$

b)$4x=128^{o}\\x=\frac{128^{o}}{4}\\x=32^{o}$

c)$2x-x=20^{o}+10^{o}\\x=30^{o}$

d)$2x+x=4^{o}+5^{o}\\3x=9^{o}\\x=\frac{9^{o}}{3}\\x=3^{o}$

Explicação passo-a-passo: