-7x + 5 = -9
-7x = -14
7x = 14
x = 2
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7x - 9 = 3x + 5 7x - 3x - 9 = 5 7x - 3x = 5 + 9 4x = 14 x = 14/4
It is a linear equation in one variable, x.
7*x - 5 + 14 = 77*x + 9 = 77*x = -2x = -2/7x equals minus two sevenths
Subtract 7x from each side: 8 = -9 Not possible, game over.
-9-7x=-5 express first the equation in terms of x, where, 7x=-9+5 then, 7x=-4 thus, x=-4/7