Question

resolva as equações a) 10= x+9 b)3x=15 c) 2x=14 ​

Answer 1

a) 10 = x + 9

-x = -9 - 10

-x = -1 .(-1)

x = 1

b) 3x = 15

x = 15/3

x = 5

c) 2x = 14

x = 14/2

x = 7