What is the area of a parallelogram that has a base of 12 3/4 in. and a height 2 1/2

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters .

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

2x minus y equals 6, x plus y equals negative 3