Question

3x+4/5+x-7/2=2(2x+3)/5

Answer 1

4х+4/5-7/2=(4х+6)/5
4х-4х/5= 6/5-4/5+7/2
16х/5=39/10
Х=39/32

Answer 2

3x + 4/5 + x -7/2 = 2(2x+3)/5
4x + (8 - 35)/10 = (4x + 6)/5
4x - 27/10 = (4x + 6)/5
4x - (4x + 6)/5 = 27/10
(20x - 4x - 6)/5 = 27/10
(16x - 6)/5 = 27/10
10(16x - 6) = 27*5
160x - 60 = 135
160x = 135 + 60
x = 195/160 = 39/32 = 1 7/32

Answer 3

ответ там 13