Question

me ajudem vale nota ​

Answer 1

1) x - 15 = 60

x = 75

a) 75

2) 5x = 80

x = 16

b) 16

3) 2x + 1 = 9

2x = 8

x = 4

V = {4}

4) 5x = 2x + 27

3x = 27

x = 9

c) 9