7(х+3)-5(х-3)=17-х
7х+21-5х+15-17+х=0
3х+19=0
3х=-19
х=-19÷3
х=-6 1/3
7x + 21 - 5x + 15 = 17- x.
7x - 5x +. x = 17 - 21- 15
3x = - 19
x = - 6,3
7(х+3)-5(х-3)=17-х
7х+21-5х+15-17+х=0
3х+19=0
3х=-19
х=-19÷3
х=-6 1/3
7x + 21 - 5x + 15 = 17- x.
7x - 5x +. x = 17 - 21- 15
3x = - 19
x = - 6,3