а) x = 5.3 - 2.4 = 2.9б) x = 1.7 + 2.8 = 4.5в) 2.9 + x - 3.5 = 4.72.9 + x = 4.7 + 3.52.9 + x = 8.2x = 8.2 - 2.9 = 5.3г) 13.2 - (5.7 + x) = 3.97.5 - x = 3.9-x = 3.9 - 7.5-x = -3.6x = 3.6
а) x = 5.3 - 2.4 = 2.9
б) x = 1.7 + 2.8 = 4.5
в) 2.9 + x - 3.5 = 4.7
2.9 + x = 4.7 + 3.5
2.9 + x = 8.2
x = 8.2 - 2.9 = 5.3
г) 13.2 - (5.7 + x) = 3.9
7.5 - x = 3.9
-x = 3.9 - 7.5
-x = -3.6
x = 3.6