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2x+2+5-b= x-2+50%(x-2)
2x+7 - b = x-2 +0,5x-1
2x+7 - b = 1,5x -3
-b = 1,5x-2x -3-7
-b = -0,5x-10
b=10+0,5x
2x+2+5=2x+7
150%*(x-2)=1,5x-3
2x+7-(1,5x-3)=2x+7-1,5x+3=0,5x+10