SOLUTION: Write inequality, solve problem, check solution. three times the sum of a number and seven is greater than five times the number minus 13 3(x)+7>5(x)-13 (is this

Question 269235: Write inequality, solve problem, check solution.
three times the sum of a number and seven is greater than five times the number minus 13
3(x)+7>5(x)-13 (is this right) How do I solve?
Answer by dabanfield(803) (Show Source): You can put this solution on YOUR website!
Write inequality, solve problem, check solution.
three times the sum of a number and seven is greater than five times the number minus 13
3(x)+7>5(x)-13 (is this right) How do I solve?
Not quite right :)
3(x+7) > 5x - 13
Expanding we have:
3x + 21 > 5x - 13
Substract 3x from both sides:
3x - 3x + 21 > 5x - 3x - 13
21 > 2x - 13
Add 13 to both sides:
21 + 13 > 2x - 13 + 13
34 > 2x
Divide both sides by 2:
34/2 > x
x < 17
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