16.8×2.1-16.8
=16.8×(2.1-1)
=16.8×1.1
=18.48
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=16.8X(2.1一1)=1.848
16.8×2.1-16.8
=16.8×(2.1-1)
=16.8×1.1
=16.8x(1+0.1)
=16.8+1.68
=18.48
16.8×2.1-16.8
= 16.8 x (2.1 -1)
= 16.8 x 1.1
= 16.8 x (1 + 0.1)
= 16.8 x 1 +16.8 x 0.1
= 16.8 + 1.68
= 18.48
16.8×2.1-16.8
=16.8×(2.1-1)
=16.8×1.1
=16.8×(1+0.1)
=16.8+1.68
=18.48