Question

みゅう:)

この問題の中で間違ってる問題ってありますか？

ve the following proportions.
(1) x6 = 4:3
24:3x
(3)
=8
x =
9:15 x 20
(5) 3x:9= 14 : 6
126 = 18x
x = 17
(7) 16:7x = 8:28
56x=448
x = 8
(9) (x+12): 21 = 3:7
7(x +12) =
=63
72+84=63
72=63-84
=
(11) x (x+3) = 5:2
:
2x
= 5(x+3)
52H15
2x
2x-5x = 15-2
13
(13) (x+1)³10 = (x + 2): 15
15(x+1)= 10(x+2)
15x+15
1510x
= 10x + 20
= 20-15
1 x = 1
526
(15) 4: (x-5) = 20: (x - 1)
4(x-1) = 20(x-5)
4x - 4
=
4x-207-100 +4100
(17) (x + 1):6.5 = 0.3 : 1.3
1.95 =
=1.3x+1.3
①.65=1.3x
(19) (x+5)(3x + 12) = 3 : 4.5
9x + 36=4.5x + 9.5
9x-4,5x9,5-36
5.5 x 2-7615
x = -
(2) 15 x = 5:8
5x120
x = 24
(4) 8:3= 32 : x
96=8x
2:12
(6)
12 : 5x = 18:30
90x = 360
x = 4
(8) 15x: 100 = 9:4
900 = 60
x=15
(10) 10: (x + 4) = 5 : 2
20 =
5(x+4)
2025x120
32:20-2
52:00
(12) 2 (x-5) = 4:x
2x = 4(x-5)
2x = 4x-20
=-20
2ュー40×4=10
(14) (x-3): (2x - 7) = 6:9
9(x-3) = 6(2x-1)
9c-27 =12x-42
9₁²=512x = = 462 +27
(16) (x+9): 4 = (x + 11) : 12
4(x +44) = 12(x + 9)
4x+176 =
12x+118
(20)
(18) 0.7
4x - 12x = 118 176
1.1 = 2.8: (x + 0.4)
8 3.08 = 0.72 +0.28
x = -5
02.80 = 0.72
x = 4x
x =
(x - 1) (2x + 3) = 0.2 : 1.4
:
01422 +0.6 = 1.4x -1.4
0₁4x²-14₂6² -114--016
2 201²-₁2