Mathematical Expressions
Write an algebraic expression for 7 more than a number x.
x+7
Simplify: 4x+6x
10x
Write an equation for: A number x plus 11 equals 25.
x + 11 = 25
Solve: x + 8 = 19
x = 11
Solve: 5x = 35
x = 7
Solve:
x/4 = 6
x = 24
Write an algebraic expression for the product of 9 and a number n.
9n
Simplify: 7a + 5 + 3a - 2
10a + 3
Write an equation for: A number n decreased by 9 is 18.
n - 9 = 18
Solve: n - 12 = 15
n = 27
Solve: 8n = 56
n = 7
Solve:
n/7 = 8
n = 56
Write an algebraic expression for 5 less than twice a number y.
2y - 5
Evaluate 4x - 7 when x = 6.
17
Write an equation for: Four times a number y equals 36.
4y = 36
Solve: y + 17 = -4
y = -21
Solve: -6y = 42
y = -7
Solve:
m/3 = 6
m = 18
Write an algebraic expression for the quotient of a number m and 4, increased by 6.
m/4 +6
Evaluate 3a - 2b + 5 when a = 4 and b = 3
11
Write an equation for: The quotient of a number p and 5 is 7.
p/5 = 7
Solve: m - 6 = 10
m = 16
Solve: -2m = 20
m = -10
Solve:
y/(-5) = 9
y = -45
Write an algebraic expression for 3 less than the product of 5 and a number p.
5p - 3
Evaluate 2(3m - 4) + n when m = 5 and n = -2.
20
Determine whether x = -3 is a solution to 2x + 7 = 1.
Yes because 2(-3) + 7 = 1
Solve: p - 1 = -3
p = -2
Solve: -3p = -9
p = 3
p = 20