2 years ago

3x+y=15 5x-4y=8 resolucion de sistema por el metodo de sustitucion

Mathematics

1 answer:

Brrunno [24]2 years ago

8 0

Answer:

x=4

y=3

Step-by-step explanation:

we have the following equations

3x+y=15 equation 1

5x-4y=8 equation 2

using equation 1 we have:

y=15-3x equation 3

using equation 3 in equation 2 we have:

5x-4(15-3x)=8

5x-4*15+4*3x =8

5x-60+12x = 8

17x=68

x=68/17

so we have x=4

finally in equation 3:

y = 15-3(4)

y = 15-12

y = 3

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OverLord2011 [107]

QUESTION:

n + 3 = -7

ANSWER:

$\blue{\boxed{n = - 10}}$

STEP-BY-STEP EXPLANATION:

First, Subtract 3 from the both sides of the equation

$\blue{\boxed{n = - 7 - 3}}$

Last, Subtract 3 from - 7

$\blue{\boxed{n = - 10}}$

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Bond [772]

Answer:

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Part 2) $-\frac{v^9}{w^6}$

Step-by-step explanation:

we know that

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2 years ago

Factor completely 3x − 12. 3(x − 4) 3(x + 4) 3x(−12) Prime

garri49 [273]

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