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3 years ago

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

Mathematics

2 answers:

jekas [21]3 years ago

8 0

Answer: X is equal to 8 and Y is equal to 3

balandron [24]3 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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