Question

gente é urgente pfvrrr​

Answer 1

Resposta:

a) 21x - 17 = 109

21x = 109 + 17

21x = 126

x = 126/21

x = 6

S = {6}

b) 73x + 100 = 53x

73x - 53x = -100

20x = -100

x = -100/20

x = -5

S = {-5}

c) 23x - 22 = 19x + 6

23x - 19x = 28

4x = 28

x = 28/4

x = 7

S = {7}

d) 112x - 6 = -21 + 10x

112x - 10x = -21 + 6

102x = -15

x = -15/102

x = -0,14

S = {-0,14}

e) 10(x+1) - 5(x-2) = 70

10x + 10 - 5x +10 = 70

5x = 70 - 20

5x = 50

x = 50/5

x = 10

S = {10}