Solving Proportions with Variables on Both Sides

What is the first step in solving a proportion using cross-multiplication?

• Cross-multiply the terms

• Divide the denominators

• Multiply the numerators

• Add the fractions

If you have the proportion 4/x = 3/14, what is the value of x?

• 21/2

• 14/3

• 2/21

• 3/14

What is the result of cross-multiplying 6/z = 18?

• z = 3

• z = 1/3

• z = 6

• z = 18

How do you simplify -6/2?

• 6

• 3

• -12

• -3

What is the simplified result of 3 times 13?

• 39

• 36

• 30

• 33

In the equation 2(x - 3) = -30, what is the value of x after dividing by 2 and solving?

• 12

• -12

• 15

• -15

What is the result of solving 11p + 11 = 36?

• p = 11/25

• p = 11/36

• p = 25/11

• p = 36/11

What is the first step in solving 3(15 - x) = 6(-2 + x)?

• Divide by 3

• Add 3x to both sides

• Subtract 3x from both sides

• Distribute the terms

After distributing and simplifying 3(15 - x) = 6(-2 + x), what is the next step?

• Divide by 3

• Subtract 3x from both sides

• Add 3x to both sides

• Multiply by 6

What is the final value of x in the equation 45 - 3x = -12 + 6x?

• x = 3/19

• x = 19/3

• x = 9/57

• x = 57/9