Adding & Subtraction
x+3=12
15
4t=32
t=8
j-5.4=3.2
8.6
There are 8 times as many roses in the garden as there are
dahlias. Write and solve an equation that determines how
many dahlias, š¯‘‘, there are if there are 56 roses.
What's the inverse operation of addition ?
Subtraction
117=d-86
203
y/6 = 7
y= 42
k-4.1=2.08
k= 6.18
Hal is three times as old as his nephew. Hal is 12 years old. Write a multiplication equation and solve the equation to determine his nephewā€™s age.
3x=12
x= 4 years old
What is the inverse operation of division ?
Multiplication
p + 1.6 =4.4
2.8
4.5f=18
f=4
Create an algebraic equation for the sentence. Solve each equation.
x minus one-half is one-fourth
x+1/3 = 3/4
x= 5/12
Kristina is four-fifths as old as her sister. Kristina is 12 years old. Write a multiplication equation and solve the equation to determine her sisterā€™s age.
(4/5)x =12
x= 15 years old
How do you check to see if your solution is correct?
Use Substitution !
-32+y=-81
-49
k/3 = 1.5
k=4.5
g-2/3 =1/4
g= 11/12
At the market, Sydni puts a few pears in a bag then weighs the bag on a produce scale. The bag of pears weighs 4.75 pounds. She adds more pears to the bag. The new weight of the bag is 5.6 pounds.
x=0.85
When adding and subtracting fractions in an equation, you must find a ___________ __________ to be be able to add or subtract.
What is COMMON DENOMINATOR
Create an algebraic equation for the following sentence. Solve each equation.
Thirty-three is six less than x.
33=x-6
x=39
(3/7)x =4
x=9 1/3
(2/9) b = 4/3
b=6
Keaton sold three-fourths as much as Jimmy during a fundraiser. Keaton sold 60 products. How many products did Jimmy sell?
(3/4) x =60
x= 80 products
When solving an equation, the goal is to ___________ the variable.
Isolate
- All by my self.....don't want to be... all by myself.