A submarine at an elevation of -185 meters descends to 3 times that elevation. Then, it elevates 90

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A submarine at an elevation of -185 meters descends to 3 times that elevation. Then, it elevates 90 meters. What is the submarines new elevation?

3 times the current elevation is:
3 * -185 = -555

Elevating 90 meters means we have a positive change:
-555 + 90 = -465