Solving Equations
x - 8 = 4
x= 12
3x > 87
x > 29
Jill sold half of her comic books and then bought sixteen more. She now has 36.
x/2 + 16 = 36
Find the GCF of 21 and 42
21
x + x + x
3x
2x + 5 = - 45
x= -25
3x + 5 < 14
x < 3
Juan’s cell phone company charges $35 a month for phone service plus $0.50 for each text message. He spent a total of $52 in a month.
35 + .5x = 52
10x + 5
5 (2x + 1)
2x + 5 - 15x - 22
-13x -17
4(x - 2) = 32
x= 10
-4 - 5d > 96
Long’s Coffee Shop sells a refill mug for $8.95. Each refill costs $1.50. Last month, Ruby spent $26.95 on a mug and refills.
8.95 + 1.50x = 26.95
12x + 8y - 24
4 ( 3x + 2y - 6)
2( 2x + 5) + 3
4x + 13
-3(9 + x) - 15x = 117
x= 8
6x + 2 + 6x - 10 < 14
x < 11
331 students went on a field trip. Six buses were filled and 7 students traveled in cars.
6x + 7 = 331
ac + ab + 3abc
a(c + b + 3bc)
4 - (-2 + 24x - 5) + 12x + x
11 - 11x
6p + 2 + p − 3 = 8(p −1)
p = 7
-3 - 6(4x+6) > -111
x < 3
The cost to purchase a song from iTunes is $0.99 per song. To purchase a song from Napster, you must be a member. The Napster membership fee is $10. In addition, each purchased song costs $0.89.
.99x = 10 + .89x
20gh - 36gh + 28g
4g (5h - 9h + 7)
4xy + 3yx - 2x - y + 10x2 - 14x + 5y
7xy - 16x + 4y + 10x2