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9 x+7 y=-4 11 x-13 y=-48

9 x+7 y=-4 11 x-13 y=-48

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beginarrayl x-22endarray.
Multiply both sides of the equation by a coefficient: beginarrayr 130x-7y)=-13y-13y=13 Apply Multiplicative Distribution Law: frac 117x-91y-4871x-13y)-13y)-487endarray. Calculate the first two terms: frac 11-91y=52 7(1x-13y)=-48* 7endarray. Apply Multiplicative Distribution Law: beginarrayl 17x-91y-52 77x-91y-48=7endarray. Calculate the first two terms: beginarrayl 17x-9y=326 77x-9y=336endarray. Add up the two equations: (77x-91y-(77x-91y-(77x-91y-(77x-9)endpmatrix -91y)=-52-(-336)=-52-(-336) Remove parentheses: y-77x-91y-77x-91y-77x =52336 Cancel the unknown variables: 117x-77x=77x=77x 52-336 Combine like terms: -336=-52-336 Calculate the sum or difference: 194x=-388 Reduce the greatest common factor on both sides of the equation: -2-2x-2-2x-2x-2x-2<2x-2</tex> Substitute one unknown quantity into the elimination: 77* (-2)-91y=-336 Reduce the greatest common factor on both sides of the equation: 13y=48-11x(-2)-13y=48 Calculate the product or quotient: 2213y=2213y=-22-13y=2213y=2213y= -48 Rearrange unknown terms to the left side of the equation: 13y=48-22 Calculate the sum or difference: 13y=26 Reduce the greatest common factor on both sides of the equation: y=2-y=2 Write the solution set of the equations: beginarrayl x-22endpmatrix Answer: beginarrayl x-22 y-2endarray.
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