Solving Proportions with Cross Multiplication

What is the first step in solving the proportion 4 times 2 equals 8 times (M minus 8) using cross multiplication?

• Multiply 4 by 2

• Multiply 4 by 8

• Subtract 8 from both sides

• Add 8 to both sides

After distributing in the equation 4 times 2 equals 8 times (M minus 8), what is the resulting equation?

• M = 9

• 8M - 64 = 8

• 8M = 64

• 8 = 8M - 64

In the second example, what is the result of distributing 2 times (n minus 3)?

• 2n - 6

• n - 6

• 3n - 6

• 2n + 6

What is the final value of n in the equation n times 3 equals 2 times (n minus 3)?

• n = 3

• n = -6

• n = 6

• n = -3

In the final example, what is the first step after setting up the equation 10 times (X minus 3) equals 9 times X?

• Move the X term to the left

• Divide both sides by 10

• Add 3 to both sides

• Move the X term to the right