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

Answer:

$2y – 7 = 7y - 27$

$2y - 7y = - 27 +7$

$5y = - 20$

$y = \frac{ - 20}{5}$

ANSWER

-4