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pav-90 [236]
2 years ago
12

Solve the system of equations

Mathematics
2 answers:
Brums [2.3K]2 years ago
8 0
5x+4y = 73
-4x + 4y = -8

5x + 4y -(-4x+4y) = 73 -(-8)
5x + 4y + 4x - 4y = 81
5x + 4x + 4y - 4y = 81
9x = 81
x = 81÷9
x = 9

Substitute x = 9 into any of the equations to find y.

5(9) + 4y = 73
45 + 4y = 73
4y = 73 - 45
4y = 28
y = 28÷4
y=7

Answers :
x = 9
y = 7
Nadya [2.5K]2 years ago
3 0

Answer:

(9,7)

Step-by-step explanation:

(9,7)

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