怎么解 X-60-10 = 1/4 (X-10)

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怎么解 X-60-10 = 1/4 (X-10)

怎么解 X-60-10 = 1/4 (X-10)
怎么解 X-60-10 = 1/4 (X-10)

怎么解 X-60-10 = 1/4 (X-10)
X-60-10 = 1/4 (X-10)
x-70=1/4x-2.5
3/4x=67.5
x=90

x-60-10=0.25x-2.5
x-70=0.25x-2.5
0.75x=67.5
x=90

X-60-10 = 1/4 (X-10)
X-70=1/4x-5/2
x-1/4x=-5/2+70
3/4x=135/2
x=90

x-70=1/4x-2.5
所以3/4x=67.5所以x=90.

X-60-10 = 1/4 (X-10)
X-70=1/4x-5/2
x-1/4x=-5/2+70
3/4x=135/2
x=90

(X-10)/4=X-70
X-10=4X-280
3X=270
X=90