Solve for y.

−2y+7=−5

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.