Question

puzzle #2 make true equations by dragging and flipping the cards. try to use as few flips as possible. check my work card flips: 15

Explanation:

Step1: Analyze first equation

The first equation is currently \(- 3+5 = 2\), which is already a true equation.

Step2: Analyze second equation

We have \(7-\square=9\). To make it true, we need to find a number such that \(7 - x=9\). Solving for \(x\) gives \(x = 7 - 9=-2\). We can use the card \(- 2\) (by flipping the \(2\) card to \(-2\)).

Answer:

Flip the \(2\) card to \(-2\) and place it in the blank of the second - equation \(7-(-2)=9\)