Question

1) resolva em R as equações a seguir
A) 36+2x=90
B) 28x +27=83
C) 120-7+4x=-63
D) 5x-6=30
E) 4x+110=4-3x

Answer 1

Resposta:

Explicação passo-a-passo:

a)

$36+2x=90\\2x=90-36\\2x=54\\x=27$

b)

$28x+27=83\\28x=83-27\\28x=56\\x=\frac{56}{28} \\x=2$

c)

$120-7+4x=-63\\4x=-63-120+7\\4x=-176\\x=\frac{-176}{4} \\x=44$

d)

$5x-6=30\\5x=30+6\\5x=36\\x=\frac{36}{5}$

e)

$4x+110=4-3x\\4x+3x=4-110\\7x=106\\x=\frac{106}{7}$