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masya89 [10]
2 years ago
14

11x -20y=28 3x+4y =36

Mathematics
2 answers:
jekas [21]2 years ago
8 0
Answer: X is equal to 8 and Y is equal to 3
balandron [24]2 years ago
4 0

Answer:

x = 8

y = 3

Step-by-step explanation:

11x - 20y = 28

3x + 4y = 36

11x - 20y = 28

11x = 20y + 28

x = \frac{20}{11}y + \frac{28}{11}

3x + 4y = 36

3 ( \frac{20}{11}y + \frac{28}{11} ) + 4y = 36

\frac{104}{11}y = \frac{312}{11}

y = 3

x = \frac{20}{11}y + \frac{28}{11}

x = \frac{20}{11} ( 3 ) + \frac{28}{11}

x = 8

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