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FrozenT [24]
3 years ago
11

PLEASE I NEED ANSWER ASAP

Mathematics
1 answer:
mafiozo [28]3 years ago
8 0

Answer:

42°

Step-by-step explanation:

(7x - 2) \degree = (6x + 18) \degree\\ ..(exterior \: alternate \:  \angle s) \\ 7x - 2 = 6x + 18 \\ 7x - 6x = 18 + 2 \\ x = 20 \\  \\ (7x - 2) \degree +  \angle \: 1 = 180 \degree \\..(straight \: line \:  \angle s) \\ (7 \times 20 - 2) \degree+  \angle \: 1 = 180 \degree  \\ 138 \degree+  \angle \: 1 = 180 \degree  \\  \angle \: 1 = 180 \degree - 138 \degree \\  \angle \: 1 = 42\degree

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