Writing Equations
Bruce bought two books. One book costs $4 more than three times the other. Together, the two books cost him $72.
x+(3x+4) = 72
The sum of a number and four times the number
Write and tell if it's linear
x+4x
Linear
If 2x+7=27 and 3x+1=28, does 2x+7=3x+1, why?
No, 28 does not equal 27. The two equations would have to have the same answer
x+4+3x=72
x=17
Create a bet of how many points you want to win or lose for this question
x2+3=42/2 - 2
solve for x
x=4
Janet is three years older than her sister Julie. Janet's brother is eight years younger than their sister Julie. The sum of their ages is 55 years.
3+x+x-8+x=5
6 x 1/x
Nonlinear
24x+4+2x = 3(10x-1)
X=2
Is 2 a solution?
No 2 is not a solution
x+3+x-8+x=55
x=20
The sum of three consecutive integers is 1,623.
x+x+1+x+2=1,623
The cube of a number divided by the square of the same number
x3/x2
Nonlinear
Combine like terms
x+x+x+2x+4-5+6
5x+5
1/2x+10 = 54
x=88
Steven has some money. If he spends $9, then he will have 3/5 of the amount he started with.
x-9=3/5x
The square of the sum of six and a number
(6+x)2
Nonlinear
x+2x-x+3
2x+3
3x+x+5=429
x=106
The product of five and a number
5x
A number decreased by three squared
x-32
Linear
x+1/2x-3+x+32
2 1/2x + 29
What do you do when x is being multiplied by a fraction?
Multiply by the reciprocal