essy13 essy13
  • 17-08-2018
  • Mathematics
contestada

51 = 2x - 5(3x + 21)

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Vanessa033
Vanessa033 Vanessa033
  • 17-08-2018

51=2x-5(3x+21)

you multiply -5 and 3x=-15x= -15x and -5 multiply 21=105

51=2x-15x-105

multiply 2x and -15x =-13x

51= -31x-105

31x=-105-51

13x=-156

Answer x=-12

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