Associative property of mulipication, the ability to move parenthasees with mltipication or additon
By writing an equation you can easily solve this:
18+ X + 4X - 1 = 42
•we need the answer to 4X-1
1. put the parts that include the X parameter in one side and the integer numbers in one side :
X + 4X = 25
5X= 25
X= 5
2. 4X-1 —> 4x5-1 = 19
Step-by-step explanation:
the product of −1 and −3
(-1)×(-3)
= 3
