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3 years ago

Simplify (4x) - mn - 15 -2.

Mathematics

1 answer:

madam [21]3 years ago

5 0

4x−mn−15−2

=4x+−mn+−15+−2

=(−mn)+(4x)+(−15+−2)

=−mn+4x+−17

Answer:

=−mn+4x−17

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Solve each system of equation by substitution y=-x+5 x+2y=2

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Answer:

$x = 8$

$y = -3$

Step-by-step explanation:

Given :

$y = -x + 5$ ...................... equation 1

$x + 2y = 2$ ........................ equation 2

solving the system of linear equation by substitution method , substitute equation 1 into equation 2 , that is

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$x - 2x + 10 = 2$

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collect the like terms

$10 - 2 = x$

therefore :

$x = 8$

substitute $x = 8$ into equation 1 to find the value of y , that is

$y = -8 + 5$

$y = -3$

Therefore :

$x = 8$

$y = -3$

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