b) 15y - 8y = 7147y =714y = 714 / 7y = 102
g) 10k - k = 7029k = 702k = 702 / 9k = 78
e) 6t + 3t - t = 64008t = 6400t = 6400 / 8t = 800
b) 15y - 8y = 714
7y =714
y = 714 / 7
y = 102
g) 10k - k = 702
9k = 702
k = 702 / 9
k = 78
e) 6t + 3t - t = 6400
8t = 6400
t = 6400 / 8
t = 800