Question

solutia rationala a ecuatiei -3x+1=7 este...
VA ROOG!
Dau coroana

Answer 1

x= -2

pentru ca

-3x=7-1=6 =>x= - 6/3 =-2

Answer 2

$- 3x + 1 = 7 \\ \\ ( - 3x + 1) + ( - 1) = 7 + ( - 1) \\ \\ - 3x + 1 - 1 = 7 - 1 \\ \\ - 3x = 6 \\ \\ \frac{3x}{3} = - \frac{6}{3} \\ \\ x = - \frac{2 \times 3}{3} \\ \\ x = 2$