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y=2x - drugi kąt
z=2x+20 -trzeci kąt
x+y+z=180
x+2x+2x+20=180
5x+20=180 /-20
4x=160 /:5
x=32
y=2x=64
z=2x+20=84
Kąt x = 32
Kąt y = 64
Kąt z = 84
x
2x
2x+20
x+2x+2x+20=180
5x=180-20
5x=160
x=160:5
x=32
2x=2×32=64
2x+20=64+20=84
Odp: miary tych kątów to:32;64 i 84