9.7x8.8+0.85x2+0.85
=(10-0.3)X8.8+0.85X3
=10X8.8-8.8X0.3+0.85X3
=88-0.88X3+0.85X3
=88-(0.88-0.85)X3
=88-0.03X3
=88-0.09
=87.91
9.7x8.8+0.85x2+0.85
=(10-0.3)X8.8+0.85X3
=10X8.8-8.8X0.3+0.85X3
=88-0.88X3+0.85X3
=88-(0.88-0.85)X3
=88-0.03X3
=88-0.09
=87.91