LIKE TERMS
Simplify 3x + 4x.
7x
If x = 4, calculate x + 3.
7
Calculate 4 × 3x.
12x
Solve x + 4 = 9.
x = 5
Sam has x apples. She buys 5 more. Write an expression for how many apples she has now.
x + 5
Simplify 5a + 3b + 2a.
7a + 3b
If a = 5, calculate 3a.
15
Simplify 18x ÷ 3.
6x
Solve 3x = 21.
x = 7
A number is multiplied by 4 and the answer is 28. Write the expression.
4x = 28
8x − 3x + 6.
5x + 6
If x = 3, calculate 2x + 5.
11
Expand 5(2x + 3).
10x + 15
Solve 2x + 5 = 17.
x = 6
A movie ticket costs $x. Three friends each buy a ticket and spend $36 altogether. How much does one ticket cost?
3x = 36; x = $12
Simplify 4a + 3b − 2a + 5b.
2a + 8b
If a = 4 and b = 2, calculate 3a² − 2b.
44
Simplify 24x² ÷ 6x.
4x
Solve 4(x − 2) = 20.
x = 7
A rectangle has a length of x + 3 cm and a width of 4 cm. Its perimeter is 30 cm. Find the length.
2(x + 3) + 8 = 30; length = 10 cm
Simplify 7x + 4 − 3x + 2 − 5x.
−x + 6
If x = 2 and y = 5, calculate 2(x + y)²− 10
88
Expand and simplify 3(2x − 4) + 2(x + 5).
8x − 2
Solve 3x + 7 = 2x + 15
x = 8
A mobile phone plan costs $15 per month plus $4 per gigabyte of data. If the total bill is $47, how many gigabytes were used?
15 + 4x = 47; x = 8 GB