Question

1. Resolva as equações (tem que ter a conta junto):

q) - 4x - 24 = - x + 12
r) x - 20 = 132
s) 10x = 420
t) 5x - 45 = 0

Answer 1

Q) -4x-24=-x+12
-24-12=-x+4x
-36=3x
-36/3=x
-12=x
R)x-20=132
X=132+20
X=152
S) 10x=420
X=420/10
X=42
T)5x-45=0
5x=45
X=45/5
X=9

Answer 2

Equações do 1°grau


q) -4x - 24 = -x + 12

-4x + x = 12 + 24
-3x = 36
x = 36/-3
x = -12
.
.
.
r) x - 20 = 132

x = 132 + 20
x = 152
.
.
.
s) 10x = 420

x = 420/10
x = 42
.
.
.
t) 5x - 45 = 0

5x = 45
x = 45/5
x = 9