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Ok im sorry but does anyone know 7+(-12)+(-7)??

User Rajpy
by
8.7k points

2 Answers

3 votes

Answer: -12

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Step-by-step explanation:

Let's simplify the 7+(-12) portion first

Draw a vertical number line. Plot a point at 7. Then move down 12 units to arrive at -5

Or you could start at -12 and move up 7 units to arrive at -5

This tells us that 7+(-12) = -5

So the overall 7+(-12)+(-7) turns into -5+(-7)

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Draw another vertical number line, or use the one already drawn in the previous section.

Plot a point at -5. Then move down 7 units to arrive at -12

Or start at -7 and move down 5 units to arrive at -12

Therefore, -5 + (-7) = 7+(-12)+(-7) = -12 is the final answer

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Shortcut:

The 7 and -7 in the original expression add to 0. They cancel each other out. So we're left with -12

User Seshagiri
by
8.7k points
4 votes

Answer:

-12

Step-by-step explanation:

Given the following question:

7 + (-12) + (-7)
Using PEMDAS:
(-12) + (-7) = -19
7 + -19 = -12
= -12

Hope this helps.

User Seaders
by
8.2k points

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