Step 1 : Simplify both sides
-5(6a+21)=-15
(-5)(6a)+(-5)(21)=-15
-30a-105=-15
Step 2 : Add 105 to both sides
-30a-105+105=-15+105
-30a=90
Step 3 : Divide both sides by -30
-30a=90
—————
-30 -30
a = -3
First do 104/4 which equals which equals 26
so you can drive 26miles on one gallon
then do 78/26 which equals 3
so you used 3 gallons of gas on trip 2
Answer:
first one 5/8
Step-by-step explanation:
2 1/2 / 4 = 5/8
5 squared is 5x5. And 2 cubed is 2x2x2. So, the answer would be 200.
