Question

Add: –7b4c7, 77b4c7, 11b4c7 and –66b4c7.

Answer 1

The given data in the question are $-7b4c7,77b4c7,11b4c7 and -66b4c7$

We have to find addition of  all the given values

$(-7b4c7)+77b4c7+11b4c7+(-66b4c7)$

The variable of  all constant terms are same so, add all the constant values

$(-7+77+11-66)b4c7$ , adding $77$ and $11$ it get $88$ and

adding $-7$ and $-66$ it get $-73$

Now,$88+(-73)=15$ $b4c7$

Therefore,  $15 b4c7$ is a required answer.