解方程X\3.5=X-16\1.5

解方程X\3.5=X-16\1.5
解方程X\3.5=X-16\1.5

解方程X\3.5=X-16\1.5
X\3.5=X-16\1.5
(X\3.5)*1.5=X-16
1.5X/3.5=X-16
3X/7=X-16
3X=7X-112
4X=112
X=28

两边乘21
6X=14X-224
18X=224
X=224÷8
X=28

X\3.5=X-16\1.5
(1-2/7)x=32/3
x=32/3÷5/7
x=224/15

(1-1/3.5)x=16/1.5
x=16/1.5/(1-1/3.5)

X\3.5=X-16\1.5
2x/7-x=32/3
-5x/7=32/3
x=-214/15

两边同乘以1/2得x/7=(x-16)/3
两边同乘以21得3x=7x-112
移项得4x=112
计算 x=28

28

(7/3)*16/25 =28

X=224/15