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Two-Step Equations 3

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to find the largest (or smallest) possible values for the sum of x and y.



Where do you want to put the largest numbers? Where should you put the 1 and the 2?



The largest value is 19 which can be achieved by the following:
1x-8=9 and 2y+3=7

The smallest value is -6.125 which can be achieved by the following:
8x-3=4 and 1y+9=2

Source: Erick Lee

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  1. Just a note that the second equation with the y value should have a subtraction sign vice an addition sign in order for the solution to be correct. (__y – __ = __)

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