Question

Question photo is there please reply fast

Answer 1

Step-by-step explanation:

1) -5/4 + x = -1

=> x = -1+5/4

=> -1+5/4 = -4+5/4 = 1/4

2) -5/4 - x = -1

=> - x = -1+5/4 = -4+5/4 = -1/4 = 1/4

5) 0

6) 0

7) opposite of -(-a) = 1/-(-a) = 1/a

8) 7/8 × (-4) /21 = 1/2 × -1/3 = -1/6

9) -7/8 × 4/21 = -1/2 × 1/3 = -1/6