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Solving Equations
Equations with Negatives
Unknown on both Sides
Substituting
Creating Expressions
100
2x + 4 = 12
x = 4
100
12 = 5r + 27
r = -3
100
2a = 4 + a
a = 4
100
If a=2 and b=3 find the value of 3a + b
9
100
The sum of three numbers a, b, c
a+b+c
200
4 + 5m = 24
m = 4
200
33 + 4p = 9
p = -6
200
7b = 12 + 4b
b = 4
200
If c=5, d=-2 and e=7 find the value of cd + e
-3
200
The sum of three consecutive integers. Let the first integer be n.
n + (n+1) + (n+2)
300
2g - 5 = 12
g = 8.5
300
3w + 6 = -12
w = -6
300
5d + 3 = d + 15
d = 3
300
If A=6rh, find A when r=2 and h=12
144
300
A girl is 12 years old. How many years old was she m years ago?
12-m
400
6p - 8 = 37
p = 7.5
400
16 - 5d = 36
d = -4
400
4r - 6 = 9r - 21
r = 3
400
This formula converts celsius into fahrenheit. F=1.8C+32 a) Convert 45 celsius into fahrenheit b) Covert 59 fahrenheit into celsius
a) 113 fahrenheit b) 15 celsius
400
Write down the number that is half as big as c
c/2
500
2(a + 3) = 16
a = 5
500
3(t - 11) = -15
t = 6
500
3(2y + 5) = 25 + y
y = 2
500
If h=8 and r=5 find V when V=hr^2
V=200
500
A boy is b years old and his mother is 4 times as old. Find the sum of their ages in y years time
y=b+4b