Answer:
20s=m
Step-by-step explanation:
I really don't understand it that well but all that I can is that s can represent students that went on the trip, and each student's ticket cost is 20$, so 20*s=20s, but we are taking m as the total money collected, so we can end up saying that 20s=m, hope u understood :)
Answer:
3x-5y
Step-by-step explanation:
All you need to do here is combine like terms.
13x - 10x = 3x
2y - 7y = -5y
When they ask you to simplify the expression, they're not looking for you to solve anything. You just have to combine what you can. :)
The correct value is -10.
7 plus negative 10 equals negative 3.
Negative 3 times 4 equals -12.
Or, (7+-10=-3•4=-12)