If 5kg more than 3 times mac’s mass is decreased by twice his mass the result is 60 kg. what is mac’s mass?

Find the difference (8ab+a+2) - (3ab+6)

Can someone me with this problem i don't understand i need

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions.