Question

реши уравнения 3(х+7) =75. 14(12-х) =70 (82+у):6=17 (у-33):9=305

Answer 1

3(х+7) =75
3x+21=75
3x=54
x=18
14(12-х) =70
168-14x=70
-14x=-98
x=7
(82+у):6=17 
82+y=102
y=20
(у-33):9=305
y-33=2745
y=2712

Answer 2

3(х+7) =75;
3х+21=75;
3х=75-21;
3х=54;
Х=16.
14(12-х) =70;
168-14х=70;
14х=-98;
Х=7.
(82+у):6=17;
12+у/6=17;
У/6=5;
У=30.
(у-33):9=305;
У-33=305×9;
у-33=2745;
У=2778.