Question

Resolva as equações a seguir:
a) 13x-23-45=-7x+12

b) 30-20+2x=10

C) 5.(3x-2)=2.(6x+3)

Mim ajudem por favor

Answer 1

A) 13x+7x=12+23+45 <=> 20x=80 <=> x=80/20

<=> x=4

B)2x=10-30+20<=>2x=0<=>x=0

C)15x-10=12x+6<=>15x-12x=10+6<=>3x=16

<=>x=16/3

D)x=12x2 <=>x=24