Turn the question around.
If all the numbers were positive: 2.5, 1.6, 3 1/10, 1/10, and 0.5, which would be farthest to the right?
The fact is that the negative numbers are a reflection of the positive numbers.
Since 3 1/10 would be farthest to the right with positive numbers, -3 1/10 will be farthest to the left with the negative numbers.
Commutative Property of basic numbers is a property in which you can move around or move the order of the numbers yet still get the same sum or product. This property only applies to the addition and multiplication operations. In which why you might want to consider the commutative property? Well, first thing is that you get the idea that for example, 1 + 2 + 3 = 6 that if you change the order or move around the numbers like 3 + 2 + 1 = 6, you still got the sum. And next is because if will be help for more complex equations like combined operations in a single equation. 1 + 3 – 4 x 6 / 2 = 8 ; 3 + 1 – 6 x 4 / 2 = 8
Okay, let's work this out.
<span><span><span>3x</span>+70</span>−<span>7x</span></span><span>=<span><span><span><span>3x</span>+70</span>+</span>−<span>7x
</span></span></span>Combine Like Terms:<span>=<span><span><span>3x</span>+70</span>+<span>−<span>7x</span></span></span></span><span>=<span><span>(<span><span>3x</span>+<span>−<span>7x</span></span></span>)</span>+<span>(70)</span></span></span><span>
=<span><span>−<span>4x</span></span>+<span>70
Answer -4x+70
I really don't understand what you mean by this, perhaps you wrote the question wrong, but it would be great than 18.
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https://courses.lumenlearning.com/prealgebra/chapter/using-properties-of-angles-to-solve-problems/#:~:text=We%20measure%20angles%20in%20degrees,they%20are%20called%20supplementary%20angles.