Ответ:
1) 6*(2x-3)-5x=17
12x-18-5x=17
12x-5x=17+18
7x=35
x=35:7
x=5
2) 18x+3*(7x+4)=78
18x+21x+12=78
18x+21x=78-12
39x=66
x=66:39
x=66/39= 1 27/39
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Ответ:
1) 6*(2x-3)-5x=17
12x-18-5x=17
12x-5x=17+18
7x=35
x=35:7
x=5
2) 18x+3*(7x+4)=78
18x+21x+12=78
18x+21x=78-12
39x=66
x=66:39
x=66/39= 1 27/39