48 quarts equals how many gallons

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details