Sub in given values to get 2 equations.

Solve system using elimination. Add the equations together, cancelling out 'b'

Sub into first equation to get value for 'b'
Answer:
0
Step-by-step explanation:
Both M and m equal 81
Answer:
????? what?
Step-by-step explanation:
<h3>
Answer: 6 hours</h3>
Work Shown:
(90 lawns)/(45 hours) = (12 lawns)/(x hours)
90/45 = 12/x
2 = 12/x
2x = 12
x = 12/2
x = 6
It takes 6 hours to mow 12 lawns.
Answer:
206 miles more
Step-by-step explanation:
Divide 2240 and 28 and you get 280 then divide 2368 and 32 and subtract 280- 74