Subtract. (9x - 8) - (x + 4)

12

Step-by-step explanation:

i used cymath if that helps

8x-12

Step-by-step explanation:

Remove these () from the first pair

9x-8-(x+4)

Subtract 9x from x - X is always one unless they give you a certain number for x to be. Also remove the remainder parenthesis from the second pair of numbers.

9x-x = 8x

Add 8 to 4

8+4 = 12

Answer is 8x-12

I hope that I explained it more to the point where you understand it

hreryryrranswer:

step-by-step explanation:

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752