Question

-3 = 7 - BLANK pls tell me what blank is

Answer 1

`\boxed{10}`

Explanation:

`-3=7- \sf BLANK`

`\sf Subtract \ 7 \ from \ sides.`

`-3-7=-7+7- \sf BLANK`

`-10=- \sf BLANK`

`\sf Multiply \ both \ sides \ by \ -1.`

`-10(-1)=(-1)- \sf BLANK`

`10= \sf BLANK`

Answer 2

10

Explanation:

-3 = 7 - x

Add x to both sides

x -3 = 7 - x +x

x - 3 = 7

Now, add 3 to both sides

x - 3 + 3 = 7 + 3

x = 10