105. 1-x 2-y x+100=2*y y+10=6*x x=2y-100 y+10=6*(2y-100) y+10=12y-600 y-12y=10-600 -11y=-610 y=610/11 x=120/11 Պատ․x=610/11, x=120/11 106. բ․-x ս․-y 3x+4y=2500 4x+3y=2400 3x=2500-4y x=2500-4y/3 4*(2500-4y/3)+3y=2400 10000-16y/3+3y=2400 10000-16y+9y/3=2400 10000-25y=7200 -25y=7200-10000 -25y=-2800 y=112 Պատ․ y=112գրամ: 107. ա) x+y=82 x+z=83 y+z=85 x=82-y z=83-x=83-82+y y+1+y=85 2y=84 y=42 x=40 z=43 42+40+43=125 Պատ․125կգ բ) 1-x 2-x+5 3-x+10 4-x+15 x+5+x+10+x+15=90 3x=60 60:3=20 x=20 y=25 z=30 […]

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