Simple calculation: - 1.53 × 0.75 + 1.53 × 2 / 1 + 4 / 5 × 1.53

Simple calculation: - 1.53 × 0.75 + 1.53 × 2 / 1 + 4 / 5 × 1.53

-1.53 × 0.75 + 1.53 × 1 / 2 + 5 / 4 × 1.53
=1.53×(0.5-0.75+5/4)
=1.53×1
=1.53

9.7 * 0.47 + 1.53 * 9.7-9.7 (simple calculation)

=9.7×0.47 + 9.7×1.53 - 9.7×1
=9.7×（0.47+1.53-1）
=9.7

A simple algorithm of 75 * 23 + 19 * 25

75*23+19*25=
75*23+23*25 - 4*25 =
23*(75+25)-100 =
2300 - 100 =
two thousand and two hundred

Five sixths minus brackets five sixths minus four fifths brackets

Four fifths

Simple calculation five out of twelve minus bracket five out of six minus bracket five out of twelve
Answer quickly

5 / 12 minus brackets 5 / 6 minus brackets 5 / 12
=5/12-(5/6-5/12)
=5/12-5/6+5/12
=5/12+5/12-5/6
=5/6-5/6
=0