Question

3a+5a(6b-15a)/ 2c

considerando que
a= -3
b=-1
C= -1/3
​

Answer 1

Resposta:

$a=-3\\\\ b=-1\\ \\ c=-\frac{1}{3} \\ \\ \\ \frac{3a+5a(6b-15a}{2c} =\\ \\ \\ \frac{3a+5a((6.(-1)-15.(-3))}{2c} =\\ \\ \\ \frac{3a+5a(-6+45)}{2c}\\ \\ \\ \frac{3a+5a(39)}{2c}=\\ \\ \\ \frac{3a+5.(-3).45}{2c}= \\ \\ \\ \frac{3a-675}{2c} =\\ \\ \\ \frac{3.(-3)-675}{2c} =\\ \\ \\ \frac{-9-675}{2c} =\\ \\ \\ \frac{-684}{2.(-\frac{1}{3}) } =\\ \\ \\ \frac{-684}{-\frac{2}{3} } =\\ \\ \\ -\frac{684}{1} *-\frac{3}{2} =\frac{2052}{2} =1026$