P= peaches B=Blueberries $1.49 p + $1.99 b = $20.38 p + b = 12 lbs. Take p + b = 12 subtract p from both sides. b= 12-p Now substitute b = 12 -p for b in $1.49 p + $1.99 b = $20.38 Looks like this $1.49 p + $1.99 ( 12-p ) = $20.38 Distribute $1.99 * 12 = 23.88 Distribute $1.99 * p = $1.99p $1.49 p + $23.88 - $1.99p =$20.38 Combine $1.49 p - $1.99p = -0.50 -$0.50p + $23.88 = $20.38 Subtract $23.88 on both sides. -$0.50p = -$3.50 Divide both sides by -$0.50 peaches= 7 lbs