1)12x-35+7х=98
12х+7х=98+35
19х=133
х=133/19
х=7
Ответ:х=7
2) 25x+25-16=59
25x+25=59+16
25x+25=75
25x=75-25
25x=50
x=50:25
x=2.
Ответ : х=2
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1)12x-35+7х=98
12х+7х=98+35
19х=133
х=133/19
х=7
Ответ:х=7
2) 25x+25-16=59
25x+25=59+16
25x+25=75
25x=75-25
25x=50
x=50:25
x=2.
Ответ : х=2
12x+7x=98+35
19x=133
x=7
2) 25*(x+1)-16=59
25x +25 - 16=59
25x=59-25+16
25x=50
x=2
3)13*(x+6)-72=123
13x+78-72=123
13x=123-78+72
13x=117
x=9
4)77+8*(x-5)=125
77+8x-40=125
8x=125-77+40
8x=88
x=11