Question

A:Știind ca x +y+z +11=43,determinați valoarea lui x +y +z.

B: daca 3•x+4•y+5•z+27=59,determinați 5•z+3+4•y.

C: Știind ca x-2•y+13=52,determinați 3•x-6•y+1.

Ajutați ma va rog e urgent!!!
Clasa a 5 a!!

Answer 1

a) x+y+z+11=43
    x+y+z=43-11
    x+y+z=32

b) 3x+4y+5z+27=59
    5z+3x+4y=59-27
    5z+3x+4y=32

c) x-2y+13=52
    x-2y=52-13
    x-2y=39
    3x-6y+1=3*(x-2y)+1=3*39+1=117+1=118

Answer 2

 a)x+y+z+11=43
    x+y+z=43-11
    x+y+z=32

b) 3x+4y+5z+27=59
    5z+3+4y=59-27+3
    5z+3+4y=32+3=35

c) x-2y+13=52
    3x-6y+1=?
3x-6y+39=156
3x-6y=156-39
3x-6y=117
3x-6y+1=117+1=118