Algebra

2. Algebra Red blocks weigh 14 grams Green blocks weigh 8 grams Mary has xred blocks. In terms of x how much do Mary’s red blocks weigh? Click on the scales to find out

3. x x 14 14 Multiply the number of blocks by the weight Mary has xred blocks. Each red block weighs 14 grams We write this as 14x x

4. ! This has nothing to do with weight. Red blocks weigh 14 grams Green blocks weigh 8 grams Mary has xred blocks. She has 2 less green blocks than red blocks. In terms of x how many green blocks does Mary have? Click on the scales to find out

5. x x 2 So there are the same number of green blocks as red (x) less 2 Mary has xred blocks She has 2 less green blocks. - 2 -

6. Red blocks weigh 14 grams Green blocks weigh 8 grams Mary has xred blocks. Mary has x- 2 green blocks How much do the green blocks weigh? Click on the scales to find out

7. x 8 2 Multiply the weight by the number of blocks Green blocks weigh 8 grams Mary has x- 2 green blocks We write this as 8x - 16 - x

8. What is the total weight of all the blocks? Click on the scales to find out

9. There are xredblocks and they weigh 14g each 14x There are x- 2greenblocks and they weigh 8g each 8x - 16 22x - 16 Total weight of blocks