Im a lil confused with 20% of 180 ft
2 answers:
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Answer:
(x, y) = (2, -5)
Step-by-step explanation:
Subtract 3 times the first equation from the second:
(-2x +3y) -3(-7x +y) = (-19) -3(-19)
19x = 38 . . . simplify
x = 2 . . . . . . divide by 19
Substituting into the first equation, we have ...
-7(2) +y = -19
y = -5 . . . . . . . . add 14
The solution is (x, y) = (2, -5).
