Question

Resolva as equações:
A) 4x-2= -10
B)-7x= -49
C)3x+5= x+19
D)7x-2= 2x+48

Answer 1

A) 4x= 12
X= 12/4
X= 3
B) 7x= 49
X=7
C) 2x= 14
X=14/2
X=7
D) 5x= 50
X=10

Answer 2

a) 4x-2= -10
4x= -10+2
4x= -8
x= -8÷4
x= -2


b)-7x= -49
-7x= -49(-1)
7x= 49
x= 49÷7
x= 7


c)3x+5= x+1
3x-x= 1-5
2x= -4
x= -4÷2
x= -2


d)7x-2= 2x+48
7x-2x= 48+2
5x= 50
x=50÷5
x=10

espero ter ajudado