How do you evaluate 7\times 10+ 1+ 77×10+1+7?

1 Answer
Kushagra
Nov 14, 2017

First, do multiplication
7 xx 10 +1 +77×10+1+7
color(white)(d)darrd↓
color(white)(d)70+1+7d70+1+7
Add 1 and 7
70+1+770+1+7
color(white)(ddddio)darrddddio↓
70+color(white)(di)870+di8
Add them
70+870+8
color(white)(dd)darrdd↓
color(white)(dd)78dd78

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