Question

решить уравнение 3(5х+3)-5(х+4)=-13

Answer 1

15x+9-5x-20=-13
15x-5x=20-13-9
 10x=-2
x=-0.2

Answer 2

3(5х+3)-5(х+4)=-13
15х+9-5х+20=-13
10х+29=-13
10х=-13-29
10х=-42
х=-4,2