Question

Решите уравнения пж............................

Answer 1

а) 3/х=9/25
х=(25×3)÷9
х=25/3
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3÷25/3=9/25
3/1×3/25=9/25
9/25=9/25
б) х÷5=2÷3
х=2/3×5
х=10/3
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10/3÷5=2/3
10/3×1/5=2/3
2/3=2/3
в) х/1,2=0,3/24
х=(0,3×1,2)÷24
х=0,36÷24
х=36/100×1/24
х=3/200
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3/200÷1,2=0,3/24
3/200×10/12=3/10×1/24
1/80=1/80
г) 1 1/3÷х=1/2÷2 2/5
4/3÷х=1/2÷12/5
4/3х=5/24
3х=(24×4)÷5
х=(24×4)/5÷3
х=(24×4)/5×1/3
х=(24×4)/(5×3)
х=32/5
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4/3÷32/5=1/2÷12/5
4/3×5/32=1/2×5/12
5/24=5/24