Answer:
x=72
Step-by-step explanation:
1.2x−2.4=84
Step 1: Add 2.4 to both sides.
1.2x−2.4+2.4=84+2.4
1.2x=86.4
Step 2: Divide both sides by 1.2.
x=72
The answer is 6.25 pounds per gallon. 4x6.25=25
Three x minus seven would be the answer to this question
1/2x + 13 at least I think not so sure