Solve for x:
5x + 4 = 19
x = 3
7 more than a number (x)
x + 7
Identify the monomial: 3x2, x + 2, or 4y –3
3x2
unknown quantity represented by letters
Variable
5y – 7
When y = 3
Solve for x:
4(x – 3) = 2x + 10
x = 11
The sum of a number (x) and 8 is equal to 3 times the number
x + 8 = 3x
What is the degree of the monomial
5𝑥3y2 ?
5 (sum of exponents 3 + 2)
A number next to a variable
Coefficient
2a2 + 3a
When a = –1
–1
Solve for x:
3x − 5 = 2x + 7
x = 12
A number (x) minus three times its value is equal to -14.
𝑥 − 3𝑥 = −14
Multiply: 4x and 3x2
12x3
A combination of letters, numbers, and arithmetic operations
Algebraic expression
2x + 5y
When x = –3, y = 2
4
solve for x:
7x + 2 = 3(x+4)
x = 2.5
The sum of three times a number (m) and twice another number (p)
3m + 2p
Simplify: (−2a2)(5a3)
–10a5
Define: inequality
A statement indicating two values are not equal
4x2 + 2y – 3z
When x = 1, y = 3, z = –2
16
solve for x:
2(x+5) − 3(x−1) = 4
x = 9
The sum of twice a number (n) and 4
2n + 4
Multiply: (3x2y)(–2xy3)
Define: constant
5a2 + 3b – 2c
When a = 2, b = –1, c = 4
9