срочно! проверка знаний за 7 класс
1) (4x - 2) - (7x - 3)=9
2) 4(x - 1) + 3(x + 2) = 7(x + 3)
1) (4x - 2) - (7x - 3)=9
2) 4(x - 1) + 3(x + 2) = 7(x + 3)
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Answers & Comments
4x-7x=9+2-3
-3x=8
x=8:(-3)
x=-2 2/3