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One way to solve this system of equations is by using matrices. Form an augmented matrix in which the first 2x2 matrix is the coefficient matrix and the 2x1 matrix on its right is the answer. Now apply Gaussian Elimination and back-substitution. Using this method gives x=5 and y=1.
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Earn +20 ptsQ: 4x-7y equals 13 -2x plus 7y equals -3?
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1 over 2x plus 13 equals 9?
The answer to 1 over 2x plus 13 equals 9 is x equals -8.
Substitution method 2x plus 3y equals 13 x equals 2?
2x-3y=13
2x-3 equals 4x plus 13?
X= -8
2x plus 5 equals 31?
2x + 5 = 31 2x = 31 - 5 = 26 x = 13
2x plus 7x minus 10 equals 4x plus 3 minus 2x?
2x+7x-10=4x+3-2x 9x-10=2x+3 7x=13 x=13/7ans
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