Calculate 15 × (- 3 / 5 + 1 / 3) - 27 × (1 / 6-5 / 12) | Math enthusiast | Mathematical art

Calculate 15 × (- 3 / 5 + 1 / 3) - 27 × (1 / 6-5 / 12)

15 × (- 3 / 5 + 1 / 3) - 27 × (1 / 6-5 / 12)
=15×(-3/5)+15×(1/3)-27×(2/12-5/12)
=-9+5-27×(-1/4)
=-4+27/4
=11/4;
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