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Oksi-84 [34.3K]
3 years ago
5

What is -2(a+b)= -2a - 2b

Mathematics
1 answer:
exis [7]3 years ago
7 0

Answer:

-2(a+b)=-2a-2b  

Equation is alway true

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    -2*(a+b)-(-2*a-2*b)=0  

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 (0 -  2 • (a + b)) -  (-2a - 2b)  = 0  

Step  2  :

Equation at the end of step  2  :

 0  = 0  

Step  3  :

Equations which are always true :

3.1    Solve   0  = 0This equation is a tautology (Something which is always true)

Equation is alway true

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Given the 2 equations

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Add (1) and (3) term by term to eliminate x

0 + 3y = 6

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Substituting into (2)

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solution is (1, 2 )

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3 years ago
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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