All Algebra 1 Resources
Example Questions
Example Question #51 : Proportions
Solve for .
Cross-multiply. When multiplying with a negative variable, answer is positive.
Divide on both sides.
Example Question #52 : Proportions
Solve for .
Cross-multiply. When multiplying with a negative number and variable, answer is negative.
Divide on both sides. When dividing with another negative number, answer is positive.
Example Question #1181 : Algebra 1
Solve for .
Multiply on both sides.
Divide on both sides.
Example Question #55 : Proportions
Solve for .
Multiply on both sides.
Subtract on both sides. Since is greater than and is negative, our answer is negative. We treat as subtraction problem.
Example Question #53 : Proportions
Solve for .
Cross-multiply. Don't forget to distribute since the denominator of that fraction is an expression.
Subtract on both sides.
Divide on both sides.
Example Question #52 : Proportions
Solve for .
Cross-multiply. Don't forget to distribute since the denominator of that fraction is an expression.
Subtract on both sides.
Divide on both sides.
Example Question #58 : Proportions
Solve for .
Cross multply. Don't forget to distribute as the denominators in both fractions are expressions.
Add on both sides.
Subtract on both sides.
Divide on both sides.
Example Question #54 : Proportions
Solve for :
To eliminate the proportion, cross multiply.
The equation becomes:
Divide by five on both sides.
Cancel the fives on the right side.
The answer is:
Example Question #60 : Proportions
Joe biked in the first of a bike trip. How far will Joe bike in total if he spend on this bike trip? Assume the relationship is directly proportional.
To solve this problem, we can set up a proportion to turn our missing value into a single variable. We know that in four hours, he traveled twelve miles. Since the relationship is directly proportional, we need to find how far this rate of travel will take him in eleven hours. Now that this is set up, we can cross multiply to elminate the fractions:
Set these equal to each other:
Divide both sides by four
traveled over eleven hours of biking.
Example Question #61 : Proportions
Solve:
To solve the proportion, we will need to cross multiply.
Simplify both sides.
Divide by six on both sides.
Reduce the fraction.
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