IXL - Solve one-step linear equations: word problems (Algebra 1 practice)

Jonah is helping his uncle plant an apple orchard. After picking up a truckload of trees, they plant 12 of them. The next day, they still have 40 trees left to plant.

Which equation can you use to find the total number of trees

in the original truckload?

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Learn with an example

question

Gina and her dad are in charge of ordering T-shirts for the Father's Day 5K fun run. They order a large number of T-shirts from a website that allows Gina to upload her own design. When the shirts arrive, Gina discovers that 30 of the shirts have the wrong design! Now Gina and her dad only have 120 usable T-shirts.

Which equation can you use to find the total number of T-shirts

in the order?

solution

To decide which equation you can use to find

look for numbers and words in the problem that talk about T-shirts.

Gina and her dad order

T-shirts, but 30 of them have the wrong design. The remaining 120 shirts have the correct design. This can be represented by an equation using subtraction.

n	−	30	=	120

Total number of T-shirts		Number of T-shirts with the wrong design		Number of T-shirts remaining

You can use the equation

–

120

to find the total number of T-shirts in the order.

Looking for more? Try these:

Lesson: Solving equations

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Work it out

Not feeling ready yet? These can help:

AA.16Write a one-step equation: word problems

AA.14Solve one-step addition and subtraction equations: word problems

AA.15Solve one-step multiplication and division equations: word problems

Lesson: Solving equations

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