Vocabulary
The sum of a number d and 20 is 35.
d + 20 = 35
d= 35 -20
d=15
The difference between 26 and a number c is 2.
26 - c = 2
c= 26 +2
c=24
6 times a number m is 45
5 friends share the cost c of dinner equally. Each person pays $12.
A number x divided by 2 is 14.
x: 2 = 14
x= 14 *2
x=28
On a triangle all sides have the same length x. If the perimeter of a triangle is 15cm, write and solve an equation to figure out the length of each side.
3x = 15
x= 15 : 3
x= 5
y fewer than 100 is 15.
A taxi ride costs $3 per km. If you paid a total of $45, how far did you travel?
3x= 45
x= 45: 3
x= 15 km