It is solved when you have it in the form of (x = some number). In this case, you have 7x on one side, which is 7 times x. You need to divide both sides by 7, so you have: 7x / 7 = 7/7.
On the left side, this becomes x. On the right side 7/7 = 1, so x=1 solves the equation. If you 'plug in' x=1 to the original equation, you get 7(1) = 7, or 7 times 1 equals 7, which is true.
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7x+2-2=16-27x = 147x/7 = 14/7x = 2
7x = 12Divide each side by 7:x = 12/7 = 1.71 (rounded)
7x+7=28x 28x-7x=7 21x=7 x=3
Solve for y 3y=-7x+9 y=-7/3x+3 the slope is the coefficient of x in this case, it is -7/3
x2 + 7x = 0 => x*(x + 7) = 0 => x = 0 or x + 7 = 0 so that x = 0 or x = -7