Justify each step with a property of algebra, put the correct property for each equation 5(2y−3)−4y=8−2y−15(what’s the property of this?)
5(2y−3)−4y=−2y−7(what’s the property of this?)
5(2y−3)=2y−7 (what’s the property of this?)
10y−15=2y−7 (what’s the property of this?)
8y=8 (what’s the property of this?)
y=1 (what’s the property of this?)

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

Which of the following contains a variable?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle. he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field