Question

5x+8=7x-12graus??

a) 40 graus
b) 58 graus
c) 80 graus
d)116 graus

Answer 1

5x + 8 = 7x - 12

5x - 7x = -12 - 8

- 2x = - 20

x = -20/-2 = 10

x = 10

5x+8 = 5*10 + 8 = 50 + 8 = 58 graus

7x-12 = 7*10 - 12 = 70 - 12 = 58 graus