求未知数x 1.0.25/1.25=1.6/x 2.2x-1.65+2.35=7

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求未知数x 1.0.25/1.25=1.6/x 2.2x-1.65+2.35=7

求未知数x 1.0.25/1.25=1.6/x 2.2x-1.65+2.35=7
求未知数x 1.0.25/1.25=1.6/x 2.2x-1.65+2.35=7

求未知数x 1.0.25/1.25=1.6/x 2.2x-1.65+2.35=7
1.0.25/1.25=1.6/x
1/5=1.6/x
x=5×1.6
x=8
2.2x-1.65+2.35=7
2x=7+1.65-2.35
2x=6.3
x=6.3÷2
x=3.15

8 3.5

1. 0.25/1.25=1.6/x
1/5=1.6/x
x=8
2. 2x-1.65+2.35=7
2x=7+1.65-2.35
2x=6.3
x=3.15

X=2.65