4e+3d+5e-5d=

What are the rules when you have a + and a -?
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2 Answers

Those at front gets the priority.

4e + 3d + 5e - 5d
= 4e + 5e + 3d - 5d
= 9e + 3d - 5d
= 9e - 2d
by
Thank you, much appreciated, I think the penny has now dropped!
by
4e  +3d  +5e  -5d

4e+5e   -5d+3d

9e-8d

That's the final ans: 9e-8d

Hope that helped
by

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