Question

Resolva as equações:
a) 2(x + 3)=18
b) 3(x - 1)=12
c)4(x + 5)=60
d)5(x - 3)=45
Façam as contas, por favor

Answer 1

A) 2•(x+3)=18
2x+ 6= 18
2x=18-6
x = 2:12 = 6

B) 3(x-1)=12
3x - 3 = 12
3x = 3+12
x= 15÷3 = 5

C)4(x+5)=60
4x+20=50
4x = 60-20
x= 40:4 = 10

D) 5(x-3)=45
5x-15=45
5x = 45+15
x= 60:5 = 12

Answer 2

A) 2x + 6 = 18
2x=18-6
X=12/2
X= 6

B) 3x - 3 = 12
3x = 12+3
X= 15/3
X= 5

C) 4x + 20 = 60
4x = 60 - 20
X= 40/4
X = 10


D) 5x - 15 = 45
5x = 45+15
X = 60/5
X = 12