25x28+25x73
=25x(28+73)
=25x(100+1)
=25x100+25x1
=2500+25
=2525
希望能帮到你!
25×28+25×73
=25×(28+73)
=25×(100+1)
=25×100+25×1
=2500+25
=2525
原式=25*28+25*72+25
=25(28+72)+25
=25*100+25
=2525
=25×(28+73)
=25×101
=25×(100+1)
=25×100+25×1
=2525
25*(28+73)