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Illustrative Math
Grade 8
Let’s solve systems of equations.
Illustrative Math Unit 8.4, Lesson 14 (printable worksheets)
The following diagram show how to solve systems of equations using substitution.
Solve these without writing anything down:
Here are a lot of systems of equations:
Tyler was looking at this system of equations:
He said,
“Just looking at the system, I can see it has no solution. If you add two numbers, that sum can’t be equal to two different numbers.”
Do you agree with Tyler?
In rectangle ABCD, side AB is 8 centimeters and side BC is 6 centimeters. F is a point on BC and E is a point on AB. The area of triangle DFC is 20 square centimeters, and the area of triangle DEF is 16 square centimeters. What is the area of triangle AED?
The Open Up Resources math curriculum is free to download from the Open Up Resources website and is also available from Illustrative Mathematics.
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.
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