-x + 7 = x - 5
add x to both sides of the equation
7 = 2x - 5
add 5 to both sides of the equation
12 = 2x
divide 2 from both sides of the equation
6 = x
Answer:
30%
Step-by-step explanation:
total boxes of pizza = 20
he gave away 14 boxes
so pizza left is 20 - 14 = 6 boxes
to calculate percentage = 6 / 20 * 100
= 6 * 5
= 30%
