Answer :

Given equation 7x + 4 = 25


We have to find the value of X (i.e., for what value of X the equation will be satisfied)


7x + 4 = 25


Taking 4 in L.H.S to R.H.S


(R.H.S = The part which is Right side to the equity in an equation


L.H.S = The part which is Left side to the equity in an equation)


By transferring the number to the other side of the equation. Its sign will be changed.


7x = 25 – 4


7(x) = 21


In the above statement 7 is multiplied by X


If that goes to other side it will be divides the number on other side


X =


X = 3


(or)


7x + 4 = 25


Subtracting 4 on both sides of the equation


7x +4 – 4 = 25 – 4


7x = 21


Dividing X on both sides of the equation



X = 3


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