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Amiraneli [1.4K]
3 years ago
13

When can you add or subtract equations in a system to solve the system? when do you have to multiply first? Justify your answers

with examples.
Mathematics
1 answer:
victus00 [196]3 years ago
5 0
You must always use the order of operations also known as PEMDAS meaning multiplication and division come before adding and subtracting for example when solving 2+2÷2 if not follwing PEMDAS it is 2 When you do it the correct way using PEMDAS it will be 3
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