Вопрос школьника по предмету Математика
решите равнение 1,5x=10; 1,2x=0; 12x-7=81; 4x-30=0
Ответ учителя по предмету Математика
1)х=10/1,5=20/3=6 2/3
2)х=0/1,2=0
3)12х=81+7
12х=88
х=22/3= 7 1/3
4)4х-30=0
4х=30
х=30/4=7,5
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