HELP PLEASE!!
Determine the exact value of x.

a.32x = 5(3x) + 36

b.(1/8)x - 3 = 2 × 162x + 1

c.3x² + 20 = (1/27)3x

Question

HELP PLEASE!!
Determine the exact value of x.

a.32x = 5(3x) + 36

b.(1/8)x - 3 = 2 × 162x + 1

c.3x² + 20 = (1/27)3x

phi · Answer

b. is a good example of why you should not use x to mean multiplication.
Use a dot instead.

anonymous · Answer

A.) Mulitply 5 by 3 to get 15:
32x=15x + 36

Move all variable terms from the right side of the equal sign to the left. Expand 15x.
32x-15x=15x + 36 - 15x.

Combine Like Terms.
17x=36

Divide both sides by 17. Dividing by 17 undoes the multiplication by 17.
x=36/17