= 7/8 − 1/5
= ((7 × 5) − (1 × 8)) / (8 × 5)
= (35 - 8) / 40
= 27/40
= 27/40
SO, 27/40 minutes are NOT spend on instructions.
Hope I helped:P
7-4=3
........................
Points A, B, C, D, E, F are called non - collinear points.
8n-28
4(2n-7)
you cant factor this. There are no powers
18.386 rounded to the nearest hundredth would be 18.39