Addition
4 + x = 20
x = 16
25 = 29 - x
x = 4
2x = 50
x = 25
x / 2 = 28
x = 14
Write an equation for the following:
A number (x) is doubled and then 7 is added. The result is 10.
2x + 7 = 10
5 + x = 12
x = 7
3 = x - 10
x = 13
7k = 77
x = 11
45 / x = 9
x = 5
Write an equation for the following:
The sum of (x) and half of (x) is 12
x + (x/2) = 12
3 + a = 2a
a = 3
10 - x = 4x
x = 2
4u + 1 = 29
u = 7
g / 4 = 6
g = 24
Write an equation for the following:
Coffee costs $c per cup and tea costs $t. Four cups of coffee and three cups of tea cost a total of $21.
4c + 3t = $21
4v + 2 = 14
v = 3
9u - 6 = 30
u = 4
-30 =3h
h = -10
g / 3 = -3
g = -9
Write an equation for the following:
Chairs cost $c each. To purchase 8 chairs and a $2000 table costs a total of $3600.
8c + $2000 = $3600
13 = -3b + 4
b = -3
7z - 1 = 8z - 4
z = 3
4 + 8y = 10y + 14
y = -5
10a + 32 = 2a
a = -4
Tyler's height is h cm and his brother Tom is 30 cm taller. Tom's height is 147cm.
h + 30 = 147