Question

Use diagramas para resolver as equações


A)2x+3=13


B)6y+7=21


C)2x+5=6

Answer 1

A) 2x+3=13
2x=13-3
2x=10
x=10/2
x=5

B)6y+7=21
6y=21-7
6y=14
y=14/6

C) 2x+5=6
2x=6-5
2x=1
x=1/2