Hey there!
10x - 2 = 18
AFD 2 to BOTH SIDES
10x - 2 + 2 = 18 + 2
CANCEL out: -2 + 2 because it gives you 0
KEEP: 18 - 2 because it helps solve for the x-value
10x = 18 + 2
10x = 20
DIVIDE 10 to BOTH SIDES
10x/10 = 20/10
CANCEL out: 10/10 because it gives you 1
KEEP: 20/10 because it gives you the result of the x-value
x = 20/10
SIMPLIFY IT
x = 2
Therefore, your answer is: [x = 2]
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)