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loris [4]
3 years ago
7

Use substitution X+y=11 -x=-y-9​

Mathematics
1 answer:
Alborosie3 years ago
4 0

Answer:

-(_y)-11=-y-9

Y-11=-y-9

2y=2

Y=1

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Identify the law illustrated by: 5n x 1 is the same as 5n
tangare [24]

<u><em>The law illustrated is Distributive Law</em></u>

This question is under a topic called algebra laws.

The laws are;

- Commutative law; This implies that when we are to add or multiply numbers, the order of addition or multiplication doesn't matter as we will still get same result.

- Associative law; This implies that if we want to add more than 2 numbers, if we decide to add the first 2 before adding the third one, we will still get the same result as if we added the second one to the third one before adding to the first one. This law also applies to multiplication.

- Distributive law; This implies that when two numbers are multiplied to produce a result, both numbers are factors of the result.

We are told in the question that ; 5n x 1 = 5n

This means that 5n and 1 are factors of 5n and this corresponds to distributive law

Read more at; brainly.in/question/39479409?tbs_match=1

7 0
2 years ago
3(x-7)+8=-20<br><br><br><br>can someone explain how to do this step by step​
Mrrafil [7]

3(x-7)+8=-20

Multiply the bracket by 3

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Move -13 to the other side. Sign changes from -13 to +13.

3x-13+13= -20+13

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Divide by 3

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x= -7/3 or in mixed number : -2 1/3

Answer : x= -7/3 or in mixed number : -2 1/3

3 0
3 years ago
Read 2 more answers
Questions are in file/pictures! <br><br> (as you can see all my questions are from math lol)
77julia77 [94]

Answer:

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Step-by-step explanation:

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Bezzdna [24]

Answer:

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