Question

решить уравнение я вам дам много балов 4,5х+1,25=371/4; у-0,3=34у+2012; 5(4,5х-1)=5,7-0,5(х-20); 2х+7/3-х-3 /2=4х

Answer 1

4,5х+1,25=371/44,5х = 371/4 - 1 целая 1/4
4,5х = 366/4
х = 366/4 ÷ 45/10
х = 366/18 = 61/3 = 20 целых 1/3

у-0,3=34у+2012y - 3/4y = 201/2 + 3/10
1/4y = 1008/10
y = 1008/10 ÷ 1/4
y = 4032/10
y = 403.2

5(4,5х-1)=5,7-0,5(х-20)22.5x - 5 = 5.7 - 0.5x + 10
22.5x + 0.5x = 5.7 + 10 + 5
23x = 20.7
x = 20.7÷ 23
x = 0.9

2х+7/3-х-3 /2=4х2x - x - 4x = 3 - 7/3
- 3x = 2/3
x = 2/3 ÷ (-3)
x = - 2/9