Subtract Equations
Solve for b:
7 = b - 3
b = 10
WORK
7 = b - 3
7 +3 = b - 3 +3
10 = b
Solve for x:
x + 3 = 15
x = 12
WORK
x + 3 = 15
x + 3 - 3 = 15 - 3
x = 12
Solve for m:
15 = 5m
m = 3
WORK
15 = 5m
15/5 = 5/5 m
3 = m
Solve for b:
b/4 = 5
b = 20
WORK
b/4 = 5
b/4 * 4 = 5 * 4
b = 20
Solve:
Five friends equally split a restaurant bill that comes to $35. How much does each friend pay?
Each friend pays $7.
WORK
5x = 35
5x/5 = 35/5
x = 7
Solve for x:
x - 3 = 2
x = 5
WORK
x - 3 = 2
x - 3 + 3 = 2 + 3
x = 5
Solve for a:
a + 5 = 18
a = 13
WORK
a + 5 = 18
a + 5 - 5 = 18 - 5
a = 13
Solve for x:
9x = 63
x = 7
WORK
9x = 63
9/9 x = 63/9
x = 7
Solve for y:
y/6 = 8
y = 48
WORK
y/6 = 8
y/6 * 6 = 8 * 6
y = 48
Solve:
You work for 8 hours on Saturday and Sunday. You earn $64.00 total. How much did you earn per hour?
You earned $8 per hour.
WORK
8x = 64
8x/8 = 64
x = 8
Solve for x:
x - 10 = 20
x = 30
WORK
x - 10 = 20
x - 10 + 10 = 20 + 10
x = 30
Solve for t:
t + 7 = 23
t = 18
WORK
t + 7 = 23
t + 7 - 7= 23 - 7
t = 16
Solve for g:
10g = 120
g = 12
WORK
10g = 120
10/10 g = 120/10
g = 12
Solve for p:
p/10 = 7
p = 70
WORK
p/10 = 7
p/10 *10 = 7 * 10
p = 70
Solve:
One building has 10 floors with height, h. The total height of the building is 130 feet tall. Write and solve an equation to find the height, h, of each floor.
10h = 130
Each floor is 13 feet tall
WORK
10h = 130
10h/10 = 130/10
h = 13
Solve for m:
m - 32 = 28
m = 60
WORK
m - 32 = 28
m - 32 + 32= 28 +32
m = 60
Solve for x:
h + 12= 20
x = 8
WORK
h +12 = 20
h + 12 -12 = 20 -12
h = 8
Solve for s:
8s = 96
s = 12
WORK
8s = 96
8/8 s = 96/8
s = 12
Solve for x:
96/x = 8
x = 12
WORK
96/x = 8
96/8= 12
x = 12
Solve
Online concert tickets cost $40 each. You paid $200. How many tickets did you buy?
You bought 5 tickets.
WORK
200/t = 40
200/40 = 5
t = 5
Solve for p:
12.5 = p - 7.1
p = 19.6
WORK
12.5 = p - 7.1
12.5 + 7.1 = p - 7.1+ 7.1
p = 19.6
Solve for x:
128 + f = 159
f = 31
WORK
128 + f = 159
128 -128 + f = 159 -128
f = 31
Solve for p:
150 = 3p
p = 50
WORK
150 = 3p
150/3 = 3/3 p
50 = p
Solve for d:
121/d = 11
d = 11
WORK
121/d = 11
121/11 = 11
d = 11
Solve
Pristine Printing will print business cards for $0.12 each. You need 500 cards. You pay $100. How much change would you get back?
$40 in change
WORK
100 - 500 x 0.12 = c
100 - 60 = c
40 = c