a)6-[2(x-5)+9]=1/3x+7
b) 9,5-{8,5-[7,5-(6,5-4,5x)]}=-2,5
6-[2x-10+9]=1/3x+7
6-2x+10-9=1/3x+7
-2x+7=1/3x+7
-2x-1/3x=7-7
-2 1/3x=0:(-2 1/3)
x=0
9.5-{8.5-[7.5-6.5+4.5x]}=-2.5
9.5-{8.5-7.5+6.5-4.5x}=-2.5
9.5-8.5+7.5-6.5+4.5x=-2.5
2+4.5x=-2.5
4.5x=-2.5-2
4.5x=-4.5/4.5
x=-1
a)
6-[2(x-5)+9]=1/3x+7
6-[2x-10+9]=⅓x+7
6-2x+10-9=⅓x+7
-2x-⅓x=7-6-10+9
-2⅓x=0
b)
9,5-{8,5-[7,5-(6,5-4,5x)]}=-2,5
9,5-{8,5-[7,5-6,5+4,5x]}=-2,5
9,5-{8,5-7,5+6,5-4,5x}=-2,5
9,5-8,5+7,5-6,5+4,5x=-2,5
4,5x=-2,5-9,5+8,5-7,5+6,5
4,5x=-4,5
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a)6-[2(x-5)+9]=1/3x+7
6-[2x-10+9]=1/3x+7
6-2x+10-9=1/3x+7
-2x+7=1/3x+7
-2x-1/3x=7-7
-2 1/3x=0:(-2 1/3)
x=0
b) 9,5-{8,5-[7,5-(6,5-4,5x)]}=-2,5
9.5-{8.5-[7.5-6.5+4.5x]}=-2.5
9.5-{8.5-7.5+6.5-4.5x}=-2.5
9.5-8.5+7.5-6.5+4.5x=-2.5
2+4.5x=-2.5
4.5x=-2.5-2
4.5x=-4.5/4.5
x=-1
a)
6-[2(x-5)+9]=1/3x+7
6-[2x-10+9]=⅓x+7
6-2x+10-9=⅓x+7
-2x-⅓x=7-6-10+9
-2⅓x=0
x=0
b)
9,5-{8,5-[7,5-(6,5-4,5x)]}=-2,5
9,5-{8,5-[7,5-6,5+4,5x]}=-2,5
9,5-{8,5-7,5+6,5-4,5x}=-2,5
9,5-8,5+7,5-6,5+4,5x=-2,5
4,5x=-2,5-9,5+8,5-7,5+6,5
4,5x=-4,5
x=-1