sevans593
sevans593 sevans593
  • 07-10-2020
  • Mathematics
contestada

7x+12 = (x+3 )+ (x+4)

Respuesta :

Defourthkitten028
Defourthkitten028 Defourthkitten028
  • 07-10-2020

Answer:

-1

Step-by-step explanation:

7x+12=(x+3)+(x+4)

7x+12=2x+7

5x+12=7

5x=-5

x=-1

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