1.решите уравнение 1) -(2x-4)-3x=1-2(3-2x) 2) 1/2-1/5x=1-2x

-(2x-4)-3x=1-2(3-2x)
-2x+4-3x=1-6+4x
-5x+4=-5+4x
-5x-4x=-5-4
-9x=-9
x=1

1/2-1/5x=1-2x
x≠0
1/2-1/5x-1+2x=0
-1/2-1/5x+2x=0
-5x-2+20x²/10x=0
-5x-2+20x²=0
20x²-5x-2=0
x=-(-5)+-√(-5)²-4*20*(-2)/2*20
x=5+-√25+160/40
x=5+√185/40
x≠0
x=5-√185/40