Find the sum.



–(0.7t – 3.7k)
+ (– 6.3t + 2.3k)




–5.6t –1.4k


–4.4t−4k


–7t+6k


3t−4k

The sum of the given expressions is:

-(0.7t - 3.7k) + (-6.3t + 2.3k) = -0.7t + 3.7k - 6.3t + 2.3k

Combining like terms, we have:

= (-0.7t - 6.3t) + (3.7k + 2.3k)
= -7t + 6k

Therefore, the sum is -7t + 6k.