Four times a certain number is the same as the number increased by 78. Find the number.

Question

parthkohli · Answer

Let x be the number.

4 times the number means 4 * x or 4x
The number increased by 78 is x + 78.
They are the same.
Solve the equation:

$\Huge 4x = x + 78$

parthkohli · Answer

@megan1124 DON'T ANSWER. I'M WARNING YOU.

parthkohli · Answer

You guys may help her. But don't give the answer. It's something that I plead.

anonymous · Answer

ok :)

parthkohli · Answer

Help her figure out the problem.

anonymous · Answer

i wont she needs to learn to solve it her self

parthkohli · Answer

Okay, so here, you gotta subtract x from both sides. Then you isolate x.

anonymous · Answer

so it would be 3x=78

parthkohli · Answer

You isolate a given variable by doing the opposite thing. Like if it's x + 78, then you gotta do the inverse operation i.e subtract 78 to isolate x.

parthkohli · Answer

Isolating means making the variable a subject on one side.