1) 75:(2x) = 15:2575 25 = 15 (2x)1875 = 30xx = 1875/30x = 62,5
2) 44:99 = 4:(3x)44 (3x) = 4 99132x = 396x = 396 / 132x = 3
3) (5x):13 = 8:525x 52 = 13 8260x = 104x = 104 / 260x = 0,4
4) 10,5:21 = (4x):2010,5 20 = 4x 21210 = 84xx = 210 / 84x = 2,5
Ответы:1) x = 62,52) x = 33) x = 0,44) x = 2,5
1) 75:(2x) = 15:25
75 25 = 15 (2x)
1875 = 30x
x = 1875/30
x = 62,5
2) 44:99 = 4:(3x)
44 (3x) = 4 99
132x = 396
x = 396 / 132
x = 3
3) (5x):13 = 8:52
5x 52 = 13 8
260x = 104
x = 104 / 260
x = 0,4
4) 10,5:21 = (4x):20
10,5 20 = 4x 21
210 = 84x
x = 210 / 84
x = 2,5
Ответы:
1) x = 62,5
2) x = 3
3) x = 0,4
4) x = 2,5