Question

A)stiind ca x+y+z=43,determinati valoarea lui x+y+z

B) daca 3x+4y+5z+27=59,determinati 5z+3x+4y

C) stiind ca x-2y+13=52,determinati 3x-6y+1

Answer 1

a) x+y+z= 43

b) 5z+3x+4y =59-27

5z +3x +4y= 32

c) 3x-6y+1= 3(x-2y)+1

x-2y=52-13

x-2y= 39

2x-6y+1= 3*39 +1=  117 +1=118