1)2x * 0,25 = 640,5x = 64x = 64/0,5x = 128
2)3x 8 2/17 = 1 11/233x (138/17) = 46/233x (138/17) = 2414x = 2 17 * 23414x = 782x = 782/414x = 391/207x = 1 184/207
1)
2x * 0,25 = 64
0,5x = 64
x = 64/0,5
x = 128
2)
3x 8 2/17 = 1 11/23
3x (138/17) = 46/23
3x (138/17) = 2
414x = 2 17 * 23
414x = 782
x = 782/414
x = 391/207
x = 1 184/207