Question

one-day activity
name:
check for understanding
solve each problem

1. mindy had some juice boxes. she gave 3 juice boxes to her friends. now mindy has 4 juice boxes. solve the equation ( b - 3 = 4 ) to find the number of juice boxes, ( b ), mindy had before giving some to her friends.

Explanation:

Step1: Add 3 to both sides

To solve for \( b \) in the equation \( b - 3 = 4 \), we add 3 to both sides of the equation. This is based on the addition property of equality, which states that if we add the same number to both sides of an equation, the equation remains true. So we have:
\( b - 3 + 3 = 4 + 3 \)

Step2: Simplify both sides

Simplifying the left side, \( -3 + 3 = 0 \), so we are left with \( b \). Simplifying the right side, \( 4 + 3 = 7 \). So we get:
\( b = 7 \)

Answer:

The number of juice boxes Mindy had before giving some to her friends is \( 7 \).