
1) Substitution from definition.
2) We use 
3) We are changing the order of 3 and
.
4) We add 1 and 3
and we get 
5) Substitution from definition (but the other way than at the beginning).
Answer:
3x-4=107* why vertical angles
Step-by-step explanation:
3x-4=107
add 4 on both sides
3x=111*
x=37
Answer:
thanks
Step-by-step explanation:
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