Question

Resolva as equações :

A) -4x=16
B) x/3=15
C)X ao quadrado=4
D)2x+2+x-6=11

Answer 1

a)
-4x=16
x=16/(-4)
x=-4

b)
x/3=15
x=3*15
x=45

c)
x²=4
x=√4
x=+2 ou -2

d)
2x+2+x-6=11
3x=11+6-2
3x=15
x=15/3
x=5

Answer 2

a) - 4x= 16

x= 16/-4

x= - 4

b)x/3 = 15

x= 15• 3

x= 45

c) x²= 4

x= ± √4

x= ± 2

d) 2x + 2 + x - 6 = 11

2x + x = 11 - 2 + 6

3x = 9 + 6

3x = 15

x= 15/3

x=5