danaperry22 danaperry22
  • 03-09-2019
  • Mathematics
contestada

What is this 15=2+4-d

Respuesta :

sebastian2019 sebastian2019
  • 03-09-2019

Answer:

-9

Step-by-step explanation:

15=2+4-d

15+d=6

d=-9

Answer Link
Аноним Аноним
  • 03-09-2019

15=2+4-d

15=6-d

Move 6 to the other side

Sign changes from +6 to -6.

15-6=6-6-d

15-6=-d

9=-d

Multiply both sides by -1 to get +d

(9)(-1)=(-d)(-1)

Answer: d=-9

Answer Link

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