Answer:
12 minus 7 is 5 plus 3 is 8
a. 5
Step-by-step explanation:
3x2t = 6t+15 = 5t+20
-5t -5t
t+15 = 20
-15 -15
t = 5
A dollar
7+3 is 10
3 divided by 1 is 3