Question 717047: 2a+5=a+7
Answer by lenny460(1073)   (Show Source):
You can put this solution on YOUR website! 2a+5=a+7
Subtract 5 from each side of the equation.
2a + 5 - 5 = a + 7 - 5
Combine like terms:
5 - 5 = 0
7 - 5 = 2
Therefore
2a = a + 2
Subtract a from each side of the equation.
2a - a = a + 2 - a
Combine like terms:
2a - a = a
a - a = 0
Answer:
a = 2
Lennox Obuong
Algebra Tutor
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