Question

Resolva as equações abaixo.

a) 4y= 30 - 18

b) 5z-6 = z+14

c) m+4 = 20

d) 2 x - 3 +2x +1=3x+18

Answer 1

a)
4y = 30 - 18
4y = 12
y = 12/4
y = 3

b)
5z - 6 = z + 14
5z - z = 14 + 6
4z = 20
z = 20/4
z = 5

c)
m + 4 = 20
m = 20 - 4
m = 16

d)
2x - 3 + 2x + 1 = 3x + 18
4x - 3x = 18 + 3 - 1
x = 20

Answer 2

A.) 4y=30-18
4y=12
y=12/4
y=3
b)5z-6=z+14
5z-z=14+6
4z=8
z=8/4
z=2
c)m+4=20
m=20-4
m=16
d)2×-3+2×+1=3×+18
2×+2×-3×=18+3-1
×=20