Question

Choose the expression that is equivalent to -4 - (-9).

A 4 + 9
B 4 - 9
C -4 + 9
D -4 + (-9)​

Answer 1

`\\ \sf\longmapsto -4-(-9)`

`\\ \sf\longmapsto -4+9`

Option C is correct .

Note:-

• (-)(-)=(+)
• (+)(-)=(-)
• (-)(-)=(+)
• (+)(+)=(+)

Answer 2

d

Explanation: