winchester890
winchester890
07-02-2021
Mathematics
contestada
- 4 x + 9 = 21 x=___ help
Respuesta :
eivad405
eivad405
07-02-2021
x=-3
because
-4x=21-9
-4x= 12 divide both sides
x=-3
Answer Link
rosh18
rosh18
07-02-2021
Answer:
[tex] - 4x + 9 = 21 \\ - 4x = 21 - 9 \\ = 12 \\ x = \frac{12}{ - 4} \\ x = - 3[/tex]
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