Question

When we get variables to one side and constants to the other in $4x+25=7x+10$, what will be the final equation obtained?

• A. $15=3x$
• B. $3x=-15$
• C. $-3x=15$
• D. $3=15x$

Answer 1

The correct option is A $15=3x$

$4x+25=7x+10$
When $4x$ is taken to the right hand side and the constants are taken to the left hand side, we get
$25-10=7x-4x$ or $15=3x$

Another way:

When $7x$ is taken to the left hand side and the constants are taken to the right hand side, we get

$4x-7x=10-25$

or, $-3x=-15$