Question

(3x-4)+(-10+2x4)

3/4x5/8

1/2+1/4

(-3x-5-4-6)x2

Answer 1

Olá,

Vamos lá,

=(3x-4)+(-10+2x4)
=-12 +(-10 +8)
= -12 - 2
= -14

=3/4x5/8
= 3     5     15
   -- x --- =  ---
    4    8      32 



=1/2+1/4
1     1      2*1+1*1    2+1
-- + --- = ----------- = ----- = 3/4  
2      4           4            4


=(-3x-5-4-6)x2
=( 15 - 4 -6)x2
= (15-10)x2
= 5 x2
= 10