Question

Realizo las operaciones algebraicas
9 + 5 (4 + 5) – 5 +9 =



6 + 9 (5+15 -4) +12 -7 =


Desarrollo las siguientes ecuaciones

4 + 12x +6x – 5 = 2 – 20 + 3x +20 -18x



4x + 50 – 2 + 24x = 24 – 6x +12

Answer 1

9 + 5 (4 + 5) – 5 +9 =  

=9+9+25-5+9

=47

6 + 9 (5+15 -4) +12 -7 =

=6+45+135-36+12-7

=155

 

4 + 12x +6x – 5 = 2 – 20 + 3x +20 -18x

-1+18x=-15x+2

18x+15x=2+1

33x=3

x=1

 

4x + 50 – 2 + 24x = 24 – 6x +12

28x+48=36-6x

28x+6x=36-48

34x=-12

x=2.83333...