Writing Equations
9 less than a number b equals 2
b - 9 = 2
x - 8 = 12
x = 4
3p = 18
p = 6
19 - g = 7; g = 15
4 = 7
NO
Your friend has w blueberries. You have 13 blueberries. You and your friend have a total of 40 blueberries. Write an equation that you can use to find w.
w + 13 = 40
The product of a number g and 5 is 30
5g = 30
b + 14 = 33
b = 19
12q = 60
q = 5
8b = 48; b = 6
48 = 48
Yes
You have decided to cut lawns as a summer job. For each lawn you charge $20. When the summer has ended you have cut x lawns, and have made $360. Write an equation you can use to find x.
20x = 360
A number k decreased by 10 is the same as 24
k - 10 = 24
9 = y + 6
y = 3
65 = 5b
b = 13
y = 2x ; ( 3, 6 )
6 = 6
Yes
After two rounds, 24 students are eliminated from a spelling bee. There are 96 students remaining. Write an equation to find how many students they started with.
24 + s = 96
The quotient of a number q and 4 is the same as 12
q / 4 = 12
64 = h + 30
h = 34
s/10 = 7
s = 70
y = 5x + 1 ; ( 3, 16 )
16 = 16
Yes
Students and faculty raise $400 for band uniforms. The faculty raised $185. Write an equation you can use to find the amount a (in dollars) the students raised.
400 + a = 185
2 1/2 is the same as the sum of a number w and 1/2
2 1/2 = w + 1/2
a + 5.5 = 17.3
a = 11.8
3.4m = 20.4
m = 6
y = 3x + 8 ; ( 4, 20 )
20 = 20
Yes
You friend has r roses. You have 24 roses. You and your friend have a total of 45 roses. Write an equation that you can use to find r.
r + 24 = 45