Hey there!
3q - 5 = 13
ADD 5 to BOTH SIDES
3q - 5 + 5 = 13 + 5
CANCEL out: -5 + 5 because it gives you 0
KEEP: 13 + 5 because it help solve for the q-value
NEW EQUATION: 3q = 13 + 5
SIMPLIFY IT!
3q = 18
DIVIDE 3 to BOTH SIDES
3q/3 = 18/3
CANCEL out: 3/3 because it gives you 1
KEEP: 18/3 because it give you the q-value.
NEW EQUATION: q = 18/3
SIMPLIFY IT!
q = 6
Therefore, your answer is: q = 6
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)