one step equations +-
12 = 8 + y
4 = y
What's the inverse operation of subtraction?
Addition
5a = 25
a = 5
The sum of a number x and 12 is 32
x + 12 = 32
Tell wether (0, 8) is a solution to y = 3x + 5
No!
130 = a - 100
230 = a
Tell whether x=40 is a solution to x - 12 = 28
Yes
a/9 = 9
a = 81
a number b decreased by 13 is the same as 42
b-13=42
Tell wether (4, 3) is a solution to y=2x -5
yes!
33 + a = 76
a = 43
x/3 = 1/4
What would be the first step to solving the equation?
multiply both sides by 3
625 = 25a
25 = a
72 is the same as the product of g and 12
72 = 12g
Identify the Independent and dependent variables: The equation k=60h represents the distance k of a train after traveling for h hours.
IV: h
DV: k
a-10.25 = 18.75
a = 29
Word used for the term that stands alone without a coefficient in an equation or expression.
Constant (+12, -32.5, x 6, etc.)
1/7 a = 4
a = 28
8 is the quotient of x and 9
8 = x/9
Tell wether (10, 35) is a solution to y=3x -5
No!
12.01 + b = 36.1
b = 24.09
When you know your answer is correct, you have done this.
7/8k = 21
k = 24
You have $4. You and your friend have a total of $13, how much does your friend have?
Write and solve an equation.
4+x=13
x=9
Identify the Independent and dependent variables: You are making bracelets. The equation b=5d+10 represents the amount of b bracelets you have after d days.
IV: d days
DV: b bracelets