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emoniclark18
emoniclark18 emoniclark18
  • 07-09-2016
  • Mathematics
Answered

3a + 21 = 7 - 4a what's the answer

Verified Answer :

sammibrisky
sammibrisky sammibrisky
  • 07-09-2016

after simplifying a= -2

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Willchemistry
Willchemistry Willchemistry
  • 07-09-2016

3a + 21 = 7 - 4a

3a + 4a = 7 - 21

7 a = -14

a = - 14 / 7

a = - 2

hope this helps!

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