Work with Distributor Dee

Dee multiplies the first term inside the parentheses and forgets the rest.

Quick lesson

The distributive property: a(b + c) = ab + ac. The outside factor multiplies every term inside the parentheses.
Carry the sign with the factor: −2(x − 5) = (−2)(x) + (−2)(−5) = −2x + 10.
Only terms inside the parentheses get multiplied; anything outside is left alone.

5 challenges. Spot the trick, understand it, fix the work, check the answer. Get 4 of 5 clean (first try or one retry per step) to tame Dee.

Prototype · results saved on this device only