Vocabulary
Examples include: x or any letter
What is the inverse operation of addition?
Subtraction
What is the inverse operation of division?
Is 3x + 5x like terms?
Yes
How do you know when to use distributive property?
When you see parentheses ()
Which is the coefficient in the equation?
2x + 3 = 5
The coefficient (the number next to the variable) is 2.
Solve for x:
x + 2 = 6
x= 4
Solve for x:
x/2 = -9
x = -18
Identify the like terms in the expression
4x + 5y - 2z - 3x + 10y
4x & - 3x
5y & 10y
Simplify:
3(x + 5)
3x + 15
Is this an example of an expression or equation?
5x - 3 = 2
Equation because it contains an = sign
Solve for y:
y - 23 = 7
y = 30
Solve for x:
-7x = 35
4x + 3y - 2x +2y
2x + 5y
Simplify:
3(-2x - 5)
-6x - 15
Identify the variable, coefficient, and constants of the equation.
5y + 2 = 18
Variable = y
Coefficient = 5
Constants = 2 & 18
Solve for z:
-12 + z = -135
z = -123
Solve for z:
z/12 = -13
z = -156
Simplify the expression:
-2a + 45b - 3c + 2a + 5b
50b - 3c
Simplify:
-2(-30 + 15x)
60-30x
Give an example of an equation and label the following parts:
1. variable
2. coefficient
3. constant
2x = 4
Variable is x, coefficient is 2, constant is 4
2x + y + z is not an example of an equation
Solve for a:
-190 = a + 210
a = -400
Solve and check:
a/54 = -3
a = - 162
Check:
(-162)/54 = -3
Simplify:
-323a + 23b - 34a + c + 456
-357a - 23b + c + 456
Simplify:
-8(-3x - 5z - 4)