5X + 7 = 56
subtract 7 from each side
5X + 7 - 7 = 56 - 7
5X = 49
divide both sides by 5
X = 49/5
Check
5(49/5) + 7 = 56
5 * 49 = 245/5 = 49
49 + 7 = 56
56 = 56
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If the equation is (5x + 3 - 7) / 2 = 56, than x = 23.2
-5x + x + 9 = -4x + 12 -4x + 9 = -4x + 12 9 = 12 This equation has no solution.
5x-3 = 11+12x 5x-12x = 11+3 -7x = 14 x = -2
It is: 12x
If: 5x = 4x+7 Then: 5x-4x = 7 And: x = 7