Solve for
x
a) 7^x = 1

x=0

Step-by-step explanation:

Take the logarithm of both sides of the equation to remove the variable from the exponent. Hope this helps!

Let's call the number "n"

if we write in an equation what you said it's like this:

n*2+4-n-3=n+1.

first i will move all the "n"s to the left and all the numbers to the right

n*2-n-n=1+3-4

which is

0=0

this means that for EVERY number, if you double it, add four, subtract three, you will get this number plus one.