7(4-x)=9(x-3)方程,

问题描述:

7(4-x)=9(x-3)方程,

7(4 - x)= 9(x - 3)
28 - 7 x = 9 x - 27
16 x = 55
x = 55 / 16

7(4-x)=9(x-3)
解28-7x=9x-27
16x=55
x=55/16
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28-7X=9X-27
-9X-7X=-27-28
16X=55
X=3.4375

7(4-x)=9(x-3)
28-7x=9x-27
9x+7x=28+27
16x=55
x=55/16


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28-7x=9x-27
-16x=-58
x=29/8

7(4-x)=9(x-3)
28-7x=9x-27
16x=28+27
16x=55
x=55/16