Question

encontre os valores das incógnitas: a)3x-70+2x+30 b)5x+160-x c)5x-30+2x+10​

Answer 1

a)3x+2x=30-70

5x=40

x=40:5

x=8

(acho q é assim)

b)5x-x=160

4x=160

x=160:4

x=40

c)5x+2x=10-30

7x=