Question

(d) 2y – 7 = 7y - 27​

Answer 1

Solution:-

• First write the given equation :

$\qquad\quad {:}\longmapsto\sf 2y-7=7y-27$

• Change sides :

$\qquad\quad {:}\longmapsto\sf 7y-27=2y-7$

• Take unknown factors to left side and constants to right side :

$\qquad\quad {:}\longmapsto\sf 7y-2y=-7+27$

• Simplify :

$\qquad\quad {:}\longmapsto\sf 5y=20$

$\qquad\quad {:}\longmapsto\sf y=\cancel{{\dfrac {20}{5}}}$

$\qquad\quad {:}\longmapsto\underline{\boxed{\bf y=4}}$

$\huge {\therefore}$ The value of y is 4.

Answer 2

$\large\sf{\color{red}{Solution:-}}$

First write the given equation :

$\qquad\quad {:}\longmapsto\sf 2y-7=7y-27$

Change sides :

$\qquad\quad {:}\longmapsto\sf 7y-27=2y-7$

Take unknown factors to left side and constants to right side :

$\qquad\quad {:}\longmapsto\sf 7y-2y=-7+27$

Simplify :

$\qquad\quad {:}\longmapsto\sf 5y=20$

$\qquad\quad {:}\longmapsto\sf y=\cancel{{\dfrac {20}{5}}}$

$\qquad\quad {:}\longmapsto\underline{\boxed{\bf y=4}}$

$\therefore\sf{\pink{The~ value ~of~ y ~is~ 4.}}$