Question

Me ajudem
a) 7x + 1 - 5x = 9

b) y + 9y + = -15

c)17x - 1 = 15x + 3

Answer 1

A) 7x-5x=9+1
x=10÷2
x=5
B)10y=-15
y=-15÷10
y=1,5
C) 17x-15x=3-1
x=2÷2
x=1