Question

1) Resolva as equações do 1 grau:

b) 8y-6=6y

c) 3a-15=6a-27

Answer 1

b) 8y - 6= 6y
8y-6y-6=0
2y=6
y=6/2
y = 3

c) 3a-15=6a-27
3a-15-6a+27=0
-3a+12=0
-3a=-12 (-1)
a=12/3
a=4

Answer 2

8y - 6 = 6y
8y - 6y = 6
2y = 6
y = 6 / 2
y = 3

3a - 15 = 6a - 27
3a - 6a = -27 + 15
-3a = -12
a = -12 / -3
a = 4