Question

2y+7=9x 3x-5y=4
please answer fast ​

Answer 1

Answer:

x = $\frac{9}{13}$

y = $\frac{-5}{13}$

Step-by-step explanation:

as we have 2 equations and 2 variables lets solve using elimination method,

2y + 7 = 9x

lets rearrange the terms

9x - 2y = 7  -----------(1)

3x - 5y = 4 -----------(2)

lets multiply 3 in (2) we get,

9x - 15y = 12 ------(3)

lets subtract (1) and (3)

      9x - 2y = 7

(-)    9x - 15y = 12

13y = -5

$y=\frac{-5}{13}$

lets substitute the value of y in 1 we get,

$9x +\frac{10}{13 } = 7$

117x = 81

$x = \frac{81}{117}$

$x=\frac{9}{13}$

thus the values of x and y are

x = $\frac{9}{13}$

y = $\frac{-5}{13}$

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