How do you solve an equation with more than one equals symbol?

For geometry, we have to find the value of x for the following angle measurements.

measurement of angle AOC = 7x – 2 which is equal to the measurement of angle AOB = 2x + 8 which is equal to the measurement of angle BOC = 3x + 14.

So does that mean that the equation would have to be:

7x – 2 = 2x + 8 = 3x + 14?

I don’t really get it, because an equation supposedly cannot have more than one equals symbol. So if you could kindly help me out, that’d be great. Thank you.

Oh and on a side note, angle AOB added to angle BOC is equal to angle AOC.

How do you solve an equation with more than one equals symbol?

How do you solve an equation with more than one equals symbol?

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