OpenStudy (anonymous):

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

6 years ago
Parth (parthkohli):

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: $$\Huge 4x = x + 78$$

6 years ago
Parth (parthkohli):

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

6 years ago
Parth (parthkohli):

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

6 years ago
OpenStudy (anonymous):

ok :)

6 years ago
Parth (parthkohli):

Help her figure out the problem.

6 years ago
OpenStudy (anonymous):

i wont she needs to learn to solve it her self

6 years ago
Parth (parthkohli):

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

6 years ago
OpenStudy (anonymous):

so it would be 3x=78

6 years ago
Parth (parthkohli):

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.

6 years ago
Parth (parthkohli):

Isolating means making the variable a subject on one side.

6 years ago