SOLUTION: 2(2x=5)-5 = 2x+7 This is part of my sons homework. He did not bring a text book home and this is one of his problems. How can I help when I don't know my self? Please help. Thank

Algebra ->  Algebra  -> Signed-numbers -> SOLUTION: 2(2x=5)-5 = 2x+7 This is part of my sons homework. He did not bring a text book home and this is one of his problems. How can I help when I don't know my self? Please help. Thank       Log On

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Question 51852: 2(2x=5)-5 = 2x+7 This is part of my sons homework. He did not bring a text book home and this is one of his problems. How can I help when I don't know my self? Please help.
Thank you.
Found 2 solutions by stanbon, Earlsdon:
Answer by stanbon(57284) About Me  (Show Source):
You can put this solution on YOUR website!
2(2x+5)-5 = 2x+7
Use the distributive law to get:
4x+10-5=2x+7
Simplify the left side to get:
4x+5=2x+7
Subtract 2x from both sides and 2 from both sides to get:
2x=2
Divide both sides by 2 to get:
x=1
Cheers,
Stan H.

Answer by Earlsdon(6287) About Me  (Show Source):
You can put this solution on YOUR website!
Your son should take notes in class.
Solve for x:
2%282x-5%29-5+=+2x%2B7 Apply the disributive property to the left side by multiplying the inside of the parentheses by 2.
%284x-10%29-5+=+2x+%2B+7 Simplify the left side.
4x+-+15+=+2x+%2B+7 Subtract 2x from both sides of the equation.
2x+-+15+=+7 Add 15 to both sides.
2x+=+22 Finally, divide both sides by 2.
x+=+11