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(a) 35 × 17 = 17 × 5 x ..... (b) 86 × 19 = (86 × ..........) - (86 × 1) so how I can calculate? ​

(a) 35 × 17 = 17 × 5 x ..... (b) 86 × 19 = (86 × ..........) - (86 × 1) so how I can calculate? ​
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(a) 35 × 17 = 17 × 5 x .....

(b) 86 × 19 = (86 × ..........) - (86 × 1)
so how I can calculate? ​

User Thromordyn
by
7.8k points

1 Answer

5 votes

Answer:

(a) 7

(b) 20

Explanation:


35*17=17*5*7 since
5*7=35


86*19=86(20-1)=86(20)-86(1)

User Heinob
by
7.7k points
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