Question

Resolva as equações abaixo

A)6x-12=54
B)5x-4=31
C)2x-7=-9
D)3x-4=23

Answer 1

A)6x - 12 = 54

6x = 54 +12

6x = 66

x = 66 / 6

x = 11

B)5x - 4 = 31

5x = 31 + 4

5x = 35

x = 35 / 5

x = 7

C)2x - 7 = - 9

2x = - 9 + 7

2x = -2

x = - 2 / 2

x = - 1

D)3x - 4 = 23

3x = 23 + 4

3x = 27

x = 27 / 3

x = 9

Answer 2

A)6x-12=54
6x=54+12
6x=66
x=66÷6
x=11

B)5x-4=31
5x=31+4
5x=35
x=35÷5
x=7

C)2x-7=-9
2x=-9+7
2x=-2
x=-2÷2
x=-1

D)3x-4=23
3x=23+4
3x=27
x=27÷3
x=9