Mathematician

If x = 55, than substitute 55 for x.

22x just equals 22 of x or 22 times x.

22x equals 22(55)

First let's write this out in a formulaic sense:

10^4 * (6 + 78) ÷ 7

To do this, we need to know Order of Operations (PEMDAS)

First we do parenthesis (P):

10^4 * (6 + 78) ÷ 7

10^4 * 84 ÷ 7

Next, exponents (E):

10^4 * 84 ÷ 7

(10^4 = 10 * 10 * 10 * 10)

10000 * 84 ÷ 7

Next, Multiplication and Division (MD):

10000 * 84 ÷ 7

840000 ÷ 7

120000

You are correct, j*z123. I just wanted a bit more explanation.

Still incorrect, 10^4 is not 40.

No, that is incorrect! Wait, and I'll write the correct answer.

No, the question is find x in x + 2 = 3

                                           ^

                                           Found it!

3*10^8 is the way you do it.

"*" is the symbol for multiplication in a pc calculator.

$${\mathtt{78}}{\mathtt{\,\times\,}}{\mathtt{500}} = {\mathtt{39\,000}}$$

A way you can do problems like this in your head is doubling one number and halving the other.

Ex:

$${\mathtt{500}}{\mathtt{\,\times\,}}{\mathtt{2}} = {\mathtt{1\,000}}$$

78 ÷ 2 = 39

Then you add the three zeros to 39 (the tens trick.) and you have the answer quickly and easily!

Is this $${\frac{{\mathtt{8}}}{{\mathtt{2}}}}$$ or 8 ÷ 2?

Did you downvote anon? Because anon is correct.