brooke3493
25.06.2019 •
Mathematics
Solve this system of equations using elimination -3x - 4y = 7 -2x + 4y = 3
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Ответ:
Add the two rows together
-5x = 10
Solve for x in the above equation
x = -2
Substitute x = -2 into any of the two equations. Let's pick the firs equation; -3x - 4y = 7
-3 × -2 - 4y = 7
Solve for y in the above equation
y = -1/4
Therefore,
x = -2
y = -1/4
Ответ:
sycamore
Step-by-step explanation: