Nicoleycannolii
13.07.2019 •
Mathematics
Solve the system of equations: -10x-3y=-18 -7x-8y=11
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Ответ:
-10x - 3y = -18 (1)
-7x - 8y = 11 (2)
Multiply equation (1) by 8 and equation (2) by -3
-80x - 24y = -144 (1)
21x + 24y = -33 (2)
Add
-59x = -177
x = 3
Plug in x = 3 into -10x-3y=-18
-10(3) -3y =-18
-30 - 3y = -18
3y = -12
y = -4
Answer
(3, - 4)
Ответ:
what
Step-by-step explanation: