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Math Word Problems - GED, PSAT, SAT, ACT, GRE Preparation
2.1 Word Problems - Basic Operations With Variables - 1
Word Problems as equations
Five more than twice a number is 28.
Solution: 2x + 5 = 28
Choose the algebraic equation for the word problem given below.
: Katie has twice as many tropes and Aron.
a = k x 2
k = a x 2
a x k = 2
: The product of a number and 5 is equal to sum of that number and 14.
5x = x + 14
5x = 14
5x - 14 = x
: Jill has 4 fewer pencils than Matt.
j = m + 4
m = j - 4
j = m - 4
: Ben has 17 basketball trophies.
b < 17
b = 17
b > 17
: Cod's money is twice as much as Peter's money.
p = 2c
c = 2p
c = p/2
: Two more than three times a number is 20.
3x + 2 = 20
2x + 3 = 20
2x = 30
: Jill has 5 more pens than Kelly.
j = k - 5
j = k + 5
k = j + 5
: 9 decreased by half a number is equal to 6.
9 - x/2 = 6
x/2 - 9 = 6
x - 9 = 6
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