4x + 11 = 13
(4x + 11) -11 = (13) -11
4x = 2
(4x)/4 = (2)/4
x = 2/4
x= 1/2, or 0.5
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5
-13 + 24 = 11
In the equation 3x plus 7 equals 13, x is equal to 2.
Equations: 7x+4y = 9 and 2x+3y = 1 Multiply all terms in the 1st equation by 2 and all terms in the 2nd equation by 7 So: 14x+8y = 18 and 14x+21y = 7 Subtract the 1st equation from the 2nd equation: 13y = -11 => y = -11/13 By substituting y = -11/13 into any of the equations x = 23/13 Therefore the solutions are: x = 23/13 and y = -11/13
n + 13 = 21. n = 21 - 13