<em>- 2n - h(4rx - 6s) - 3rx + 3s =</em>
<em>= - 2n - h×4rx - h×(- 6s) - 3rx + 3s</em>
<em>= - 2n - 4hrx + 6hs - 3rx + 3s</em>
<em> = 2(3hs - 2hrx - 2) - 3(rx - s)</em>
Answer:
Step-by-step explanation:
First digit 2,3,4,5 = 4 different digits.
Second digit 2,3,4,5 = 4 different digits.
Third digit = 1,2,3,6,7,9 = 6 different digits.
Total number of possibilities = 4*4*6 = 96
6a2 + 6a + 7
1. 1017.4
2. 1139.8
Those the answers