Приняв во внимание знак перед скобками,решите уравнения:
A) (13x-15)-(9+6x)=-3x
B) (0,5x+1,2)-(3,6x-4,5)=(4,8x-0,3)+(10,5x+0,6)
D)12-(4x-18)=(36+4x)+(18-6x)
помогите ПЖ срочно нужно !!!
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