The first one is 52 because if you toke 80 and subtract it by28 it will give you x witch is 52 s=52
Answer:

Step-by-step explanation:



Answer:
$2.50
Step-by-step explanation:
I hope this picture helps, but next time try to chose a number to cancel out the fraction. Example, y=1/3x+4 chose 3,6,9 and other multiples of 3.
You can use 10 blocks by having 1 ten and 6 ones and then divide it into groups of 3 when you do that you are kind of subtracting when you take away 3 away each time. After that you multiply it, so you think of whatever times 3 is 16 which is 15 r1. Then your answer should be 30.