Question

Can someone please help me with b and C questions ​

Answer 1

(b) 33919

(c) 8 ¹/₃

Explanation:

⇒ 317 × 107 = (300 + 10 + 7)(100 + 7)

= 300(100 + 7) + 10(100 + 7) + 7(100 + 7)

= 30000 + 2100 + 1000 + 70 + 700 + 49

= 30000 + 2000 + 100 + 1000 + 70 + 700 + 40 + 9

= 30000 + 2000 + 1000+ 700 + 100 + 70 + 40 + 9

= 30000 + 3000 + 800 + 110 + 9

= 30000 + 3000 + 800 + 100 + 10 + 9

= 30000 + 3000 + 900 + 10 + 9

= 33919

`\begin{aligned} 5(2)/(3)+3(1)/(2)-(5)/(6)&=(5 *3+2)/(3)+(3 * 2+1)/(2)-(5)/(6)\\\\&=(17)/(3)+(7)/(2)-(5)/(6)\\\\& =(17 * 2)/(3* 2)+(7* 3)/(2* 3)-(5)/(6)\\\\ & = (34)/(6)+(21)/(6)-(5)/(6)\\\\ & = (34+21-5)/(6)\\\\ & = (50)/(6)\\\\&=8(1)/(3)\end{aligned}`