Question

7th grade maths
Step by step explain each question! Thanks!

Answer 1

1. Answer:

`{ \tt{ (5)/(2y) + (3)/(10) }} \\ \\ = { \tt{ (50 + 6y)/(20y) }}`

2. Answer:

`(4m)/(9) + (11)/(12) \\ \\ = (16m + 33)/(36)`

3. Answer

`(4)/(b) - (1)/( 3) \\ \\ = (12 - b)/(3b)`

4. Answer:

`- (2r)/(15) - (2)/(3) \\ \\ = ( - 2r - 10)/(15)`

5. Answer:

`(m)/(8) - (11)/(m) \\ \\ = \frac{ {m}^(2) - 88}{8m}`

6. Answer:

`(15)/(16y) + (5)/(12) \\ \\ = (45 - 20y)/(48y)`

7. Answer:

`(2)/(9w) + (3)/(3z) \\ \\ = (6z + 9w)/(3wz)`

8. Answer:

`(2)/(3p) - (1)/(3p) \\ \\ = (1)/(3p)`

9. Answer:

`(15)/(2x) - (4)/(7y) \\ \\ = (105y - 8x)/(14xy)`

10. Answer:

`(14)/(3d) - (1)/(2d) \\ \\ = \frac{25}{6 {d}^(2) }`

11. Answer:

`(11f)/(20) + (2)/(15) \\ \\ = (33f + 8)/(60)`

12. Answer:

`(2)/((w + 1)) + (1)/(4) \\ \\ = (9 + w)/(4w + 4)`