数学题在线解答123*2/13+246*1/13+369*3/13=

优质解答

123*2/13+246*1/13+369*3/13
=123*(2/13+2/13+3*3/13)
=123*13/13
=123*1
=123 123*2/13+246*1/13+369*3/13
=123*(2/13+2/13+3*3/13)
=123*13/13
=123*1
=123

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