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murzikaleks [220]

3 years ago

8

X * 2 - 21 x + 12 x - 12 x * 2 - 17

1 answer:

BaLLatris [955]3 years ago

3 0

Answer:

The functions is;

x - 12

Step-by-step explanation:

Input is (x)

(2) - 12 = -10

(6) - 12 = -6

(10) - 12 = -2

(5) - 12 = -7

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Find the value of x and y for the equation x+y5 7x+9y=6

Nastasia [14]

Answer:

$x = \frac{39}{2}$

$y = -\frac{29}{2}$

Step-by-step explanation:

Given

$x + y= 5$ --- (1)

$7x + 9y = 6$ ---- (2)

Required

Find x and y

Make x the subject in (1)

$x + y= 5$

$x = 5 - y$

Substitute 5- y for x in (2)

$7x + 9y = 6$

$7(5 - y) + 9y = 6$

Open bracket

$35 -7 y + 9y = 6$

Collect like terms

$-7y + 9y = 6 - 35$

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