Question

What is the sum of (–2.1x + 3.7) and (5 + 4.9x)?

Answer 1

It's easier to work with problems such as –2.1x + 3.7 -5 + 4.9x when we rearrange the like terms vertically:

–2.1x + 3.7 -5 + 4.9x

becomes

–2.1x + 3.7

+4.9x -5

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2.8x - 1.3 (answer)