Put the correct number in the box, so that the equation remains true.
If 4x-10=30 then 4x-10+5=30
Given, If 4x-10=30 then 4x-10+5=30
From given expression,
⇒4x-10=30⇒4x-10+5=30+5[Add5bothsides]
Comparing this expression with the given expression 4x-10+5=30 we get +5 as the number to be placed in the box.
Hence, If 4x-10=30 then 4x-10+5=30+5.
If 11y-100=y+10 then 11y-100=y+10
If 10a=55-a then ×10a=8(55-a)