zionallen0214 zionallen0214
  • 01-09-2020
  • Mathematics
contestada

Find the value of (x) 2x + 2(-3x-5)=26

Respuesta :

zrh2sfo
zrh2sfo zrh2sfo
  • 01-09-2020

Answer:

x = -9

Step-by-step explanation:

Solve for x:

2 (-3 x - 5) + 2 x = 26

2 (-3 x - 5) = -6 x - 10:

2 x + -6 x - 10 = 26

2 x - 6 x = -4 x:

-4 x - 10 = 26

Add 10 to both sides:

(10 - 10) - 4 x = 10 + 26

10 - 10 = 0:

-4 x = 26 + 10

26 + 10 = 36:

-4 x = 36

Divide both sides of -4 x = 36 by -4:

(-4 x)/(-4) = 36/(-4)

(-4)/(-4) = 1:

x = 36/(-4)

The gcd of 36 and -4 is 4, so 36/(-4) = (4×9)/(4 (-1)) = 4/4×9/(-1) = 9/(-1):

x = 9/(-1)

Multiply numerator and denominator of 9/(-1) by -1:

Answer: x = -9

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