5.28x6.57+2.64x6.5
=5.28x6.5+5.28x0.07+2.64x6.5
=6.5x(5.28+2.64)+0.3696
=6.5x7.92+0.3696
=6.5x8-6.5x0.08+0.3696
=46-0.46+0.3696
=46+0.3696-1+0.54
=45.9096
5.28x6.57+2.64x6.5
=2.64×(13.14+6.5)
=2.64×19.64
=51.8496.
5.28×6.57+2.64×6.5
=34.6896+17.16
=51.8486
5.28x6.57+2.64x6.5
=34.6896+17.16
=51.8496