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2 years ago

Solve this system of equations using elimination with multiplication

Mathematics

1 answer:

romanna [79]2 years ago

5 0

Answer:

Step-by-step explanation:

3x - 4y = -11

x - 2y = -5

Compare the coefficients of the variables.

The coefficients of the x terms, 3 and 1, are multiples of each other.

The coefficients of the y terms, -4 and -2, are also multiples of each other.

That makes it easy to eliminate either variable.

I'll eliminate the y variables. Multiply the second equation by -2, then add it to the first equation:

₋-2x + 4y = 10

3x - 4y = -11

--------------------

x + 0y = -1 , so x = -1.

Substitute -1 for x in either equation and solve for y:

3(-1) - 4y = -11

y = 2

(x,y) = (-1, 2)

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alekssr [168]

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For $\left | x \right |$ we will have positive values only.

$\left | -2.7 |\right =2.7$

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The absolute value of any number is its positive value only.

As for example $(-2.7)$ and $(2.7)$ both are having equal distance from $0$ in a number line, one on the left other on the right side of the number line but are equidistant from $0$ .

So absolute value of a number is its distance on number line from reference point $0$ .

One by one we will work with all of our question.

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