Plz help, will give brainllest to the one correct

1. (3 * 6) + (3 * x) = 24

2. 18 + 3 * x = 24

3. 6 + x = 8

Step-by-step explanation:

We have the equation which is:

3 * (6 + x) = 24

The order of the solution would be as follows:

First step:

(3 * 6) + (3 * x) = 24

Second step:

18 + 3 * x = 24

Third step:

6 + x = 8

The rest of the steps are wrong, and have nothing to do with solving the equation.

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92