Answer:
Linda car will use 13.5 gallons
Step-by-step explanation:
There will be 2 groups, and each group have 6girls and 9 boys.
12 ÷ 2 = 6
18 ÷ 2 = 9
17+x=57.
So, subtract 17 from both sides
X=40
answer: Subtract sixteen from both sides of the equation
2 +16 -16=22x -16
x = 4/5
-10 + a = 6a - 7a
Rearrange the left hand side
a - 10 = 6a - 7a
Simplify 6a - 7a
a - 10 = -a
Add a on both sides
2a - 10 = 0
Add 10 on both sides
2a = 10
Divide by 2 on both sides
a = 5