Question

solve the following system of equations.
11x - 8y = 27
3x + 5y = -7

Answer 1

From (1), we get

11x = 8y + 27, or

x = 8y + 27/11

Putting this value of x in (2), we have

3(8y + 27/11) + 5y = -7

=> 24y + 81 +55y = -77

79y = -77 -81 = -158

=> y = -158/79

= -2

substituting the value of y in (3), we have

x = 8 × (-2) + 27/11

= -16 + 27/11

= 11/11

= 1

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