oblystonegegick
oblystonegegick oblystonegegick
  • 20-02-2018
  • Mathematics
contestada

What number does x stand for in this equation?

-7x + 6=27

Respuesta :

naomi479xx
naomi479xx naomi479xx
  • 20-02-2018
⓵ You need to solve the left side first in order to isolate the × and find it’s value :

-7× + 6 = 27
-6 -6
↓

-7× = 21
÷-7 ÷-7

↓

× = -3

If you find it too difficult to divide a number by a negative, just divide 21 by 7 and always remember that when dividing, when the signs are different the answer is negative. So knowing that you could just divide 21 by 7, which is 3, and add a negative sign in front!


I hope this helped, if there’s anything let me know! ☻
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