Equations
x*3=21
x=7
Solve for p p+z=x
p=x-z
Heather is painting a portrait of her best friend, Lisa. To make it easier, she divides the portrait into 6 equal parts. What fraction represents each part of the portrait?
1/6
9-5a+2+a
-4a+11
10x=150
x=15
8/2(2+2)=x
16
Solve for x y=5x-6
x=-6-y/5
For a party, Jaime had 5 ⅓ bottles of cola for her friends to drink. She drank ⅓ of a bottle herself. Her friends drank 3 ⅓. How many bottles of cola does Jaime have left?
1/3
7.2(w-5)+3w
10.2w-36
25.6=r+14.1
11.5=r
56(z-15)=30
z=435/28
Solve for x
y=5x-6
y=1/5x+6/5
Captain America’s circular shield has a diameter of 76.2 centimetres. What is the area of his shield?
381/5
3(1+2q)-3(1+4q)
-6q
76/35=k+31/10
-13/14=k
4x-6/5=2
x=4/5
Solve for y 2x-3y=8
y=2/3
A coin collection amounting to $25 consists of nickels and dimes. There are 3 times as many nickels and dimes. There are 3 times as many nickels as dimes. How many coins of each kind are there?
x=100
300 nickels
n(1+10n)-n(4n-3)
4n+6n2
9.5v=-98.8
v=10.4
5(x+4)=6x-5
25
4=-2(4x+y)
y/x=4
Bob has in his pocket a number of pennies, 5 times as many nickels as pennies and 5 more quarters than pennies. The coins amount to $2.27. Find the number of each kind of coin.
2.27$
-3(8x+4)+1/2(6x-24)
-21x-24
4.6=p-2 4/9
p=317/45