Question

Me ajudem ,por favoor

Answer 1

Resposta:

a) 3X-2=16

3X=16+2

3X=18

X=18/3

X=6

b) 5X-7=5+2X

5X-2X=5+7

3X=12

X=12/3

X=4

c) 4X=21+X

4X-X=21

3X=21

X=21/3

X=7