chamillelynn
16.02.2021 •
Mathematics
Solve the system of equations -5x – 2y = 13 and 3x-y = 12 by combining the equations
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Ответ:
x=1 y =15
Step-by-step explanation:
hopefully correct
-5x-2y=13 (i)
3x-y=12
-y=12-3x
y=-12+3x (ii)
substitute ii into i
-5x-2(-12+3x)=13
-5x +24-6x=13
-11x=-11
x=1
substitute x into ii
y=-12+3(1)
y=15
.
. . x=1 and y =15
Ответ:
X is the number cans collected in 1 day