The second angle in a triangle is five times as large as the first. The third angle is two-thirds as large as the first. What ar
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So you reversed the subtraction a bit; the equation you're gonna be solving is 
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First step ya gonna do is to reverse the + and - symbols in the trinomial thats in the parentheses so your equation looks like
Now just combine like terms and your answer should be
First step ya gonna do is to reverse the + and - symbols in the trinomial thats in the parentheses so your equation looks like
Now just combine like terms and your answer should be