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.
The answer to 1 over 2x plus 13 equals 9 is x equals -8.
2x-3y=13
X= -8
2x+7x-10=4x+3-2x 9x-10=2x+3 7x=13 x=13/7ans
2x + 5 = 31 2x = 31 - 5 = 26 x = 13
The answer to 1 over 2x plus 13 equals 9 is x equals -8.
2x + 5 = 13 2x = 8 2x/2 = 8/2 x=4
3x+5 = 2x+13 3x-2x = 13-5 x = 8
2x-3y=13
2x + 1 = 13; 2x = 12; x = 6
2x plus 3y
-2x+13y=11 13y=2x+11 y=2x/13 + 11/13
2x+3y=13 3x-y=3 x=2
4+2x-2x+1=13+6 Combine like terms. (4+1=5; 2x-2x=0; 13+6=19) 5=19 This problem has no solution.
x-29 = 13+2x x-2x = 13+29 -x = 42 x = -42
84
X= -8