Question

Resolva as equações:

A) 7x - 7 = 7

B) 3x - x = 20

C) -81 + x + x = 0

Answer 1

A) 7x - 7 = 7

7x = 7 + 7

7x = 14

x = 14/7

x = 2

B) 3x - x = 20

2x = 20

x = 20/2

x = 10

C) -81 + x + x = 0

2x = 81

x = 81/2

x = 40.5

Espero ter ajudado :)

Answer 2

Resposta:

A)7×=7+7

7×=14

×=14/7

×=2

B)3×-×=20

2×=20

×=20/2

×=10

C)2×=0+81

2×=81

×=81/2

×=40,5