Question

Can somebody help me learn how to solve these equations ?
Solve the equation.

y + 3 = –y + 9

a. y = 1
b. y = 3
c. y = 6
d. y = 9

Answer 1

help? @welshfella

Answer 2

you need to get the y's to one side of the equation and the numbers on the other side
so first add y to both sides
y + y + 3 = -y + y + 9
now simplify
2y + 3 = 9
Next subtract 3 from both sides
2y + 3 - 3 = 9 - 3
2y = 6
finally divide both sides by 2
2y / 2 = 6/2
y = 3

Answer 3

Thank you!