Subtraction property of Equality
x + 6=4
x=-2
x - 2 = 1
x= 3
30 = 6x
x = 5
a/ -4 = -9
a = 36
-4.7k = -10.81
k = 2.3
-3 = a + 4
a= =7
q - 8 = -9
q= -1
-9d = -72
d = 8
n/ -10 = -4
n = 40
-22.8 = 6n
n = -3.8
b + 2.25= 1
b= -1.25
s - 1/9 = 5/18
s = 7/18
-32 = -4b
b = 8
g/12 = -10
g= -120
Fraction Coefficients
2/5t = 12/25
t= 6/5 or 1 1/5
d + 22 = 176
d= 154
x - 13 = 72
x = 92
There are 8 competitors in each ring for a tae kwon do tournament. If there are 96 competitors in the tournament, how many rings do they need? Write and solve the equation
Equation: 8r=96
r= 12 rings
A race car can travel at a rate of 205 miles per hour. At this rate how far would it travel in 3 hours. Write and solve a division problem.
Equation: 205 = d/3
d=615 miles
Fraction coefficient
-7/9m = 11/6
m = -33/14 or -2 5/14
A survey of teens showed that teens in Pittsburgh aged 12–17 spend 15.8 hours per week online. Teens in Miami/Ft. Lauderdale spend 14.2 hours per week online. Write and solve an addition equation to find the difference in time spent online by teens in these cities
Equation: 14.2 + d = 15.8
d= 1.6 hours per week
In a recent presidential election, Ohio had 18 electoral votes. This is 20 votes less than Texas had. How many electoral votes did Texas have? Write and solve you equation.
Equation: 18 = t - 20
t = 38 votes
Brandy wants to buy a digital camera that costs $300. Suppose she saves $15 each week. In how many weeks will she have enough money for the camera? Write and solve the equation.
Equation: 15w= 300
w=20 weeks
The distance d Tina travels in her car while driving 60 miles per hour for 3 hours is given by the equation d/3 = 60. How far did she travel?
d= 180 miles
Jaya's coach agreed to buy ice cream for all of the team members. Ice cream cones are $2.40 each. Write and solve an equation to find how many cones the coach can by with $30.
Equation: 2.4n = 30n
n= 12.5