Answer:
The error is in the middle: 2(-12) = -24 not 24.
Step-by-step explanation:
The product of two numbers with different signs is negative, so 2(-12) = -24, not 24. Then -24 — (-30) = -24 + 30 = 6.
Answer: 4
First you make your equation
3d=12
Divide
You get d=4
Therefore each person pays 4 dollars of the 12 dollar tip
4 vans, 6 cars
B = -3