Question

Решите уравнение пожалуйста 3(7+2k)-4(-7+1/2k)=-19

Answer 1

3( 7 + 2k ) - 4( - 7 + 1/2k ) = - 19
21 + 6k + 28 - 2k = - 19
4k = - 19 - 49
k = - 68 : 4
k = - 17

Answer 2

3(7+2k)-4(-7+1/2k)=-19
21+6k-(-28+2k)=-19
21+6k+28-2k+19=0
4k=-21-28-19
4k=-68
k=-68/4
k=-17