A) 17*(0.6-x) = 3.410.2 - 17x = 3.4-17x = 3.4 - 10.2-17x = -6.8x = -6.8 / -17x = 0.4
Б) 5x + 2.3 = 3.85x = 3.8 - 2.35x = 1.5x = 1.5 / 5x = 0.3
В) 5x + 3x - 1.3 = 1.18x - 1.3 = 1.18x = 1.1 + 1.38x = 2.4x = 2.4 / 8x = 0.3
Г) (x + 0.3) / 7 = 0.21x + 0.3 = 0.21*7x + 0.3 = 1.47x = 1.47 - 0.3x = 1.17
A) 17*(0.6-x) = 3.4
10.2 - 17x = 3.4
-17x = 3.4 - 10.2
-17x = -6.8
x = -6.8 / -17
x = 0.4
Б) 5x + 2.3 = 3.8
5x = 3.8 - 2.3
5x = 1.5
x = 1.5 / 5
x = 0.3
В) 5x + 3x - 1.3 = 1.1
8x - 1.3 = 1.1
8x = 1.1 + 1.3
8x = 2.4
x = 2.4 / 8
x = 0.3
Г) (x + 0.3) / 7 = 0.21
x + 0.3 = 0.21*7
x + 0.3 = 1.47
x = 1.47 - 0.3
x = 1.17