Ответ:
Пошаговое объяснение:
1/3x+1/5x+1/6x=10/30x+6/30x+5/30x=21/30x
21/30x=21/40
X=21/40÷21/30
X=21/40×30/21
X=30/40=3/4 =0,75
Ответ0,75
2)5 1/4x=15/12+22/3
5 1/4x=(1+2)(5/12+2/3)
5 1/4x=3( 5/12+8/12)
5 1/4x=3 13/12
5 1/4x=4 1/12
X=4 1/12÷5 1/4
X=49/12÷21/4
X=49/12×4/21
X=49/63=7/9
Ответ7/9
3)-5 2/5x=4 2/3-8 4/15
5 2/5x=8 4/15-4 2/3
5 2/5x=(8-4)(4/15-2/3)
5 2/5x=4(4/15-10/15)
5 2/5x=3 19/15-10/15
5 2/5x=3 9/15
X=3 9/15÷5 2/5
X=54/15÷27/5
X=54/15×5/27
X=2/3
4)
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Answers & Comments
Ответ:
Пошаговое объяснение:
1/3x+1/5x+1/6x=10/30x+6/30x+5/30x=21/30x
21/30x=21/40
X=21/40÷21/30
X=21/40×30/21
X=30/40=3/4 =0,75
Ответ0,75
2)5 1/4x=15/12+22/3
5 1/4x=(1+2)(5/12+2/3)
5 1/4x=3( 5/12+8/12)
5 1/4x=3 13/12
5 1/4x=4 1/12
X=4 1/12÷5 1/4
X=49/12÷21/4
X=49/12×4/21
X=49/63=7/9
Ответ7/9
3)-5 2/5x=4 2/3-8 4/15
5 2/5x=8 4/15-4 2/3
5 2/5x=(8-4)(4/15-2/3)
5 2/5x=4(4/15-10/15)
5 2/5x=3 19/15-10/15
5 2/5x=3 9/15
X=3 9/15÷5 2/5
X=54/15÷27/5
X=54/15×5/27
X=2/3
4)