Answer:
it's 29
Explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
x = 29
The sum of the 3 angles is 180 degrees since it is a straight line
x-1 + 3x+2 + 2x+5 = 180
Combine like terms
6x +6 = 180
Subtract 6 from each side
6x+6-6= 180-6
6x =174
Divide y 6
6x/6 =174/6
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