Question

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

Answer 1

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:

\(\Huge 4x = x + 78\)

Answer 2

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

Answer 3

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

Answer 4

ok :)

Answer 5

Help her figure out the problem.

Answer 6

i wont she needs to learn to solve it her self

Answer 7

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

Answer 8

so it would be 3x=78

Answer 9

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.

Answer 10

Isolating means making the variable a subject on one side.