Answer:
z = 1
Step-by-step explanation:
15z + 35 = 50
15z = 50 - 35
15z = 15
z = 15/15
z = 1
He has to be 5 since 5×3=15 and each year he turns one year older so yea
Answer:
y = 13 +3x
i answered in the comments, bc it wasnt lettin me actually answer
Step-by-step explanation:
3x - y = - 13
-3x -3x
-y = -13 - 3x
divide everything by -1
y = 13 + 3x
hope this helpsss!!!