Based on feedback from exit slips we identified that the biggest challenge students were having involved solving problems that had a negative coefficient for X.
Below are some problems to practice this skill. Remember, you can solve by using algebra tiles, drawing pictures, or by recording your steps mathematically. Even if you don't use the tiles create a mental picture of whether your tiles would be positive or negative to help you organize your thinking.
Remember the learning intentions:
- Be able to model how to solve linear equations with algebra tiles
- Be able to find x for a given equation
Your final answer should be in the form of a mixed number. Remember be careful to watch your signs (is x positive or negative)
Questions:
From class:
7 - 2x = 9 4 - 8x = -23 6 - 5x = 18 -9 - 8x = -47 -3 - 4x = 76
14 - 12x = 107 -7 - 3x = 4
Some extra questions:
5 - 3x = -7 -4 - 5x = 16 7 - 4x = 28 5 - 6x = 41 10 - 3x = -11
5 - 4x = 21 7 - 3x = -33 8 - 4x = 55 3 - 7x = -34 9 - 4x = -55
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