Solving Equations

Last updated over 7 years ago
2 questions
1

Luisa is solving an equation on the bottom of a page. The corner of the page where the equation is written is torn off as shown below.
7(x + 3) = 7(x + 5) –

Luisa knows only one number was torn off, and she knows that the equation has an infinite number of solutions. What must be the missing number?

1

Explain why you selected the answer above.