(x+9,14):7,2=5; 0,8(100-0,04x)=8,64. Created by lerokgolovkina. matematika-ru

(x+9,14):7,2=5; 0,8(100-0,04x)=8,64...

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(x+9,14):7,2=5; 0,8(100-0,04x)=8,64

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lena200128 1)(x+9,14):7,2=5
x+9,14=5∗7,2
x+9,14=36
x=36-9,14
x=26,86
2)0,8(100-0,04x)=8,64
100-0,04x=8,64:0,8
100-0,04x=10,8
0,04x=100-10,8
0,04x=89,2
x=89,2:0,04
x=2230

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h7 h33 kak reshit eto drobnaya cherta

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