X/0.7-【0.17-0.2x】/0.03等于1,起X的值?

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X/0.7-【0.17-0.2x】/0.03等于1,起X的值?
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X/0.7-【0.17-0.2x】/0.03等于1,起X的值?
X/0.7-【0.17-0.2x】/0.03等于1,起X的值?

X/0.7-【0.17-0.2x】/0.03等于1,起X的值?
x/0.7 - (0.17 - 0.2x)/0.03 = 1
两边同时乘以 21 得:
30x - 700(0.17 - 0.2x) = 21
30x - 119 + 140x = 21
30x + 140x = 119 + 21
170x = 140
x = 140÷170
x = 14/17