Question

Simplify the expression and find the value when x=7 X-3(x-5)​

Answer 1

Answer:

correct answer should be 1 i guess

Answer 2

Concept: This equation is a linear equation with one variable. Here we have to solve it for 'x'. First, we simplify the equation and then solve it. We must know the operations of the variable.  

Given: x=7x-3(x-5)

To find: value of 'x'

Solution:

         $x= 7x-3(x-5)$

⇒      $x=7x-3x+15$

write like terms together

⇒    $x-4x=15$

⇒        $-3x=15$

⇒           $x=-5$

Hence the value of 'x' is (-5)