Question

solve 64x-4y=-212 9x+4y=-7​

Answer 1

$\huge\underline\bold\red{AnswEr}$

X = -3 and Y = 5

SOLUTION :-

$64x - 4y = - 212 ......1) \\ 9x + 4y = - 7............2)$

adding equation 1st and 2nd

64x - 4y = -212

+

9x + 4y = -7.

73x = -219

$hence... \\ x = \frac{ - 219}{73 } \\ x = - 3$

putting value of x = -3 in equation 2

$9x + 4y = - 7 \\ 9 \times (- 3) + 4y = - 7 \\ - 27 + 4y = - 7 \\ 4y = - 7 + 27 \\ 4y = 20 \\ y = \frac{20}{4} \\ y = 5$

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