Question

1) 600 -? = 300 - 800
2) ? + 900 = 400 + 800

Answer 1

Answer:

1. 1100

2.300... .... ...

Answer 2

Answer:

1.900

2.300

Step-by-step explanation:

1. Let 600-x=-300

then X=900

2.x+900=400+800

X=300