Why is mental addition and subtraction important when you learn more difficult concept

Jill solved the inequality - x/4 < (x+2) / 3 Her solution is shown: Step 1 : - 3x<4x+8 Step 2: - 3x-4x <8 Step 3: - 7x<8 Step 4: x< - 8/7 Explain the mistake Jill made while solving for x.

Is 15/28 equivalent to 25/45

The book fair a sale where 4 books were $31.36. If you wanted to buy 3 books, how much money would you need

To find the volume of a box you multiply the links times the width times the height which what is the volume in the cubic feet of a box that is 3 foot long 8 foot wide and 16 feet high

What does 5+9999 equal?

If you see a triangle that has a small box in one angle, what type of triangle is it?

There are t teams in a soccer league. each team consists of 11 players. write an equation to find how many players p are in the league

Omar mows lawns for $9.25 an hour. He spends $7.50 on gas for the mower. How much does he make if he works h hours?

1/10 or 200 tables is what?

If 3 times a number minus 2 equals 13, what is the number? A. 4 B. - 6 C. 5 D. 2