2 answers:
The answer should be -6
Hope that helped
Okay. First simplify all the like terms (all the coefficients and all the variables).
When simplified it should give you:
5x-11
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Girls: 81
boys: 75
4x +6 = 156
4x = 150
x = 37.5
2x = 75
girls: 75 + 6
boys: x
160 degrees or 180 degrees
