Question

Indique a incógnita de cada equaçao

a) 2x - 3 = 18
b) 4y = 30 - 21
c) 5z - 6 = z + 90
d) m + 4 = 10

Obs: Quero os calculos

Answer 1

a) 2x=18+3
x=21/2
x=10,5
b)4y=9
y=9/4
y=2,25
c)5z-z=90+6
4z=96
z=96/4
z=24
d)m=10-4
m=6