Question

5. a. Știind ca X +2y+13=24, determinati 18+2y+X.
b. Știind ca 3X+6y+19=43, determinati 6y+38+3X.
c. Știind ca 2X+2y+38=62, determinati 4y+27+4X.
d. Știind ca 5X+18+20y=43, determinati 15X+38+60y.
e. Știind ca 3X+2y+4z=30, determinati 4z+43+2y+27+3X.
f. Știind ca X+3+y+4+a+5=12, determinati 2012+X+y+z.

Answer 1

a. x+2y+13=24/-13

x+2y=11

18+2y+x=18+11=29

b.3x+6y+19=43/-19

3x+6y=24

6y+38+3x=24+38=62

c.2x+2y+38=62/-38

2x+2y=24/×2

4x+4y=48

4y+27+4x=48+27=51

d.5x+18+20y=43/-18

5x+20y=25/×3

15x+60y=75

15X+38+60y=75+38=113

e.3x+2y+4z=30

4z+43+2y+27+3X=30+43+27=100

f.X+3+y+4+z+5=12

x+y+z+3+4=12/-7

x+y+z=5

2012+x+y+z=2012+5=2017

cu drag=D