Дам 50 балов просто решите уравнения
1)0,18x-2,45=0,16x+1,17
2)7,2х-4,8=55,2-7,8х
3)3(0,2х-5)-4(0,8Х+2)=3
Помогите пожалуйста
1)0,18x-2,45=0,16x+1,17
2)7,2х-4,8=55,2-7,8х
3)3(0,2х-5)-4(0,8Х+2)=3
Помогите пожалуйста
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Answers & Comments
0.18x - 2.45 = 0.16x + 1.17
0.18x - 0.16x = 1.17 + 2.45
0.02x = 3.62
x = 181
#2
7.2x - 4.8 = 55.2 - 7.8x
7.2x - 7.8x = 55.2 + 4.8
15x = 60
x = 4
#3
3(0.2x - 5) - 4(0.8x + 2) = 3
0.6x - 15 - 3.2x - 8 = 3
-2.6x - 23 = 3
-2.6x = 23 + 3
-2.6x = 26
x = -10