Answer:
-6
Step-by-step explanation:
Lets assume a number be "x".
As given, lets put in an expression:
= [tex]4\times (2x+7)[/tex] --- (first)
= [tex]5x+10[/tex]----- (second)
As known both the expression are same.
⇒ [tex]4\times (2x+7)[/tex] = [tex]5x+10[/tex]
Opening the parenthesis and distributing the number 4 with 2x and 7.
⇒ [tex]8x+28= 5x+10[/tex]
subtracting both side by 28 and 5x
⇒ [tex]3x= -18[/tex]
cross multiplying
∴ x= [tex]\frac{-18}{3} = -6[/tex]
x= -6
On subtituting the value of x on the expression.
[tex]4\times (2x+7)[/tex] = [tex]5x+10[/tex]
We get, -20=-20, which is equal.
