Question

Resolva as equações do primeuro grau 2x-10=70+7x
32x=7-3
81x=9​

Answer 1

2x - 10 = 70 + 7x

2x - 7x = 70 + 10

- 5x = 80

x = 80/-5

x = - 16

32x = 7 - 3

32x = 4

x = 32/4

x = 8

81x = 9

x = 81/9

x = 9