Solve and check each equation

1a. 12n=36
n=3

1b. n-5=8
n=13

Right

1c. -8=2x+4

x=-6

1d. 2w - 3=-9
w=-3

Right.

Thank you

You're welcome.

To solve the equation 12n = 36, we need to isolate the variable 'n' on one side of the equation.

Step 1: Divide both sides of the equation by 12:
12n / 12 = 36 / 12
n = 3

To check the solution, substitute the obtained value of 'n' back into the original equation:
12(3) = 36
36 = 36

The equation is correct, and the solution of n = 3 is verified.

To solve the equation n - 5 = 8, we need to isolate 'n' on one side of the equation.

Step 1: Add 5 to both sides of the equation:
n - 5 + 5 = 8 + 5
n = 13

To check the solution, substitute the obtained value of 'n' back into the original equation:
13 - 5 = 8
8 = 8

The equation is correct, and the solution of n = 13 is verified.