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Find the solution to the system of equations-3х + 8y = 11 -3х - 5y = -41

User Protoproto
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1 Answer

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26 votes

ANSWER

(7, 4)

Step-by-step explanation

We want to find the solution to the system of equations:

-3х + 8y = 11

-3х - 5y = -41​

From the second equation, we have that:

-3x = 5y - 41

Let us replace -3x in the first equation with the expression above:

=> 5y - 41 + 8y = 11

Collect like terms:

5y + 8y = 11 + 41

13y = 52

Divide through by 13:

y = 52 / 13

y = 4

Recall that:

-3x = 5y - 41

=> -3x = 5(4) - 41

-3x = 20 - 41

-3x = -21

Divide through by -3:

x = -21 / -3

x = 7

Therefore, the solution to the system of equations in the form (x, y) is (7, 4)

User Garrettlynchirl
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