You messed up. Left triangle"s angle is 100°, so right's would be 80°. So 80+35=115°, top angle would be 180-115= 65°, so x would be 180-65= 115, x=115°.
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You messed up. Left triangle"s angle is 100°, so right's would be 80°. So 80+35=115°, top angle would be 180-115= 65°, so x would be 180-65= 115, x=115°.