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2x=220
x=110
x-40=70
110 i 70 stopni
I kąt - x = 70⁰
II kąt x +40⁰ = 70⁰+40⁰=110⁰
x+x+40⁰=180⁰
2x+40⁰=180⁰
2x=180⁰-40⁰
2x=140⁰
x=140⁰:2
x=70⁰