Solve using substitution
6x + 2y = 34
2x - 7y = -27

6x+2y=34

6x=34-2y

x=(34-2y)÷61st euation

2x-7y=-272nd equation

putting the value of x from equation 1st in equation 2nd we will get

2(34-2y)÷6-7y=-27

68-4y-42y=-27×6

-44y=-162-68

-44y=-230

y=230÷44

y=5.2

again putting the value of x in equation 1st

6x=34-2×5.2

x=23.6÷6

x=3.9

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)