Question

alguém me ajude ????!!!
a) 7.(m - 2) = 5.(m + 3)
b) 2z + 3 = z + 2/3
c) x/3 + 3/5 =8​

Answer 1

a) 7m-14=5m+15

7m-5m=15+14

2m=29

m=29/2

b) 2z+3=z+2/3

2z-z=2/3-3

z=-7/3

c) x/3+3/5=8

5x+9=120

5x=120-9

5x=111

x=111/5