(4+x)÷5-(x-5)=(x+3)÷3+(x-2)÷-2
(4+x)÷5-(x-5)=(x+3)÷3+(x-2)÷(-2)-(3x-1)÷2=1-(2x+1)÷6(10x+1)÷6+(2x-1)÷(-3)=1-(2x+1)÷4急...
(4+x)÷5-(x-5)=(x+3)÷3+(x-2)÷(-2)-(3x-1)÷2=1-(2x+1)÷6(10x+1)÷6+(2x-1)÷(-3)=1-(2x+1)÷4急急急急...........不要过程 要全对的答案
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2013-10-30
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(4+x)÷5-(x-5)=(x+3)÷3+(x-2)÷(-2)==> 6(4+x) - 30(x-5) = 10(x+3) - 15(x-2)==> 24 + 6x - 30x + 150 = 10x + 30 - 15x + 30==> -24x + 174 = -5x + 60==> -19x = - 114==> x = 6 -(3x-1)÷2=1-(2x+1)÷6==> -3(3x-1) = 6 - (2x + 1)==> -9x + 3 = 6 - 2x -1==> -7x = 2==> x = -2/7 (10x+1)÷6+(2x-1)÷(-3)=1-(2x+1)÷4==> 2(10x+1) - 4(2x-1) = 12 - 3(2x+1)==> 20x + 2 - 8x + 4 = 12 - 6x - 3==> 12x + 6 = 9 - 6x==> 18x = 3==> x = 1/6
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