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Solving Equations using Addition & Subtraction
Solving Equations Using Multiplication & Division
Write the sentence as an equation & solve
Word Problems
Solving Multi-step Equations
100
7 + b = -1
-8
100
8t = -32
t = -4
100
32 is the sum of a number x and 9.
equation: 32 = x + 9 x = 23
100
You make $0.75 for every newspaper you sell. How many newspapers do you have to sell in order to buy a $36 video game? Write an equation and solve.
0.75n = 36 n = 48 You must sell 48 newspapers.
100
4b + 3 = -9
b = -3
200
8 = 12 + z
-4
200
-3/10k = 15
-50
200
42 less than x is -50
equation: x - 42 = -50 x = -8
200
The temperature of dry ice is -109.3 degrees F. This is 184.9 degrees F less than the outside temperature. What is the outside temperature? Write and equation & solve.
t - 184.9 = -109.3 t = 75.6 The temperature is 75.6 degrees F.
200
11 = -5x - 2
x = -2 3/5
300
y - 4/5 = -2/5
y = 2/5
300
-10 = -b/4
b=40
300
A number divided by -8 is 7.
equation: x/-8 = 7 x=-56
300
The difference in elevation of a helicopter and a submarine is 18.5 meters. The elevation of the submarine is -7.75 meters. What is the elevation of the helicopter? Write an equation & solve.
h - (-7.75) = 18.5 h = 10.75
300
-4.8f + 6.4 = -8.48
f = 3.1
400
x - 5/6 = -1/6
x = 2/3
400
3/4g = -12
g = -16
400
The product of 15 and a number is -75.
equation: 15x = -75 x = -5
400
In a school election three-fourths of the students vote. There are 1464 ballots. Write and solve an equation to find the total number of students in the school.
3/4s = 1464 s = 1952 There are 1952 total students in the school.
400
-1/3 + 2z = -5/6
z = -1/4
500
w + 13.2 = 10.4
w = -2.8
500
-1.1x = -1.21
1.1
500
A number multiplied by 2/5 is 3/20.
equation: 2/5x = 3/20 x = 3/8
500
The price of a bike at store A is 5/6 the price at store B. The price at store A is $150.60. Write and solve an equation to find how much you save by buying the bike at store A.
150.60 = 5/6x x = 180.72 (store B cost) 180.72 - 150.60 = Savings of $30.12
500
2 - b/3 = -5/2
b = 13 1/2