5X + 25 = 20
subtract 25 from each side
5X + 25 - 25 = 20 - 25
5X = - 5
divide both side integers by 5
X = - 1
check
5(-1) + 25 = 20
- 5 + 25 = 20
20 = 20
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2x + 5 + 3x = 25 5x + 5 = 25 Subtract 5 from both sides: 5x = 20 Divide both sides by 5: x = 4
2x + x + 4 +2x = x + 20 5x + 4 = x + 20 5x - x = 20 - 4 4x = 16 x = 4
It is, as stated, x2 - 5x + 25/4 = 0
How to solve: 5x+2=27 5x=25 (Subtract 2 from each side) x=25/5=5 (Divide each side by 5) So, x=5
It is: 12x