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What is 180-x=10+2(90-x)
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What is 180-x=10+2(90-x)

User Kahlua
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180-x=10+2(90-x) \\ 180-x=10+180-2x\\ 180-10-180=-2x+x \\ -10 =-x \ /*(-1) \\ x=10
User Damkulul
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