The 'answer' is the number that 'y' must be if the statement is true.
5 + 7y = 11 + 9y
Subtract 7y from each side of the equation:
5 = 11 + 2y
Subtract 11 from each side:
-6 = 2y
Divide each side by 2 :
-3 = y
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If: 5x-9y = 7 and 7y-3x = -5 Then: x = 1/2 or 0.5 and y = -1/2 or -0.5
Splitting the equation up into the two variables: x + 4x = 5x -7y + -2y = -9y Therefore, the simplified version is: 5x - 9y
9y-11=7 +11 +11 9y=18 y=2
(0,7)
9y = 12.6 y = 1.4