Question

What must be subtracted from 3a to get 4

Answer 1

Answer:

(3a-4) must be subtracted from 3a to get 4.

Step-by-step explanation:

Consider the wanted number as 'X'

So,3a-X=4

or, -X=4-3a

or, X=-(4-3a)

So, X=3a-4

$\huge\underline\mathfrak\blue{Proof:-}$

3a-(3a-4)=4

or, 3a-3a+4=4

So,4=4[Proved]

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