Erin and Ethan add the fractions 2 1/3 and 1 1/6. Look at their work below

  3 1/2

Step-by-step explanation:

Change to common denominator of 6.

2 1/3 = 2 2/6. (Multiply fraction by 3/3 to get 2/6)

Now you can add.

  2 2/6

+ 1 1/6

—————

3 3/6

3/6 can be simplified to 1/2 by dividing numerator and denominator by 6.

answer = 3 1/2

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

step-by-step explanation: