-10=-19 is the answer goodluck
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Answer</h3>
They are being multiplied by 2 each time.
You would set it up like this: 150x + 280 = 255x The you just solve.
The answer is 9900000000 (thats 8 zeros) What you do is you find 10^10 which is 10000000000 (ten zeros) and multiply that by 7.92 to get 79200000000 then you just multiply it by 1/8 to get the answer.
