rachel693
16.10.2019 •
Mathematics
Tell wether the ordered pair (5,-3) is a solution of the system -3x+2y=-21; -x-y=-2
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Ответ:
(5,-3) is a solution of -x-y=-2
Step-by-step explanation:
You just plug in the numbers in the equation
x=5 y=-3
-5(5)+2(-3)=-25-6 which doesn't equal -21
-5-(-3)=-5+3=-2
Ответ: