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Tanya [424]
2 years ago
11

Solve the system of linear equations by substitution. y=X-4 - 2x+y= 18

Mathematics
1 answer:
11Alexandr11 [23.1K]2 years ago
4 0

Answer:

] y=x-4

-2x+y=18

y - x = -4

y - 2x = 18

equation [2] for the variable y

[2] y = 2x + 18

// Plug this in for variable y in equation [1]

[1] (2x+18) - x = -4

[1] x = -22

// Solve equation [1] for the variable x

[1] x = - 22

// By now we know this much :

y = 2x+18

x = -22

// Use the x value to solve for y

y = 2(-22)+18 = -26

Step-by-step explanation:

please mark me as brainlist please

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One way to check if 102 ÷ 6 = 17 is by focusing on the left side of the equation.


102 ÷ 6 can be converted into \frac{102}{6}


\frac{102}{6} can be simplified, lets start by dividing the numerator and denominator by 2.

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What is the factored form of x^3 -1
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Answer:

The factored form of x^3 -1 will be:

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Step-by-step explanation:

Given the expression

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Rewrite 1 as 1³

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