When working a problem like this 40- (3 +2)x6 where do you start working the problem first?

Which rational number could be graphed between -4 and -5

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.