1) x/4+x/3=7 2)2x/5+x/2=9 3)5x/4-x/2=3 4)4x/5-x/10=7 5)3x/4+5x/6=38 6)2x/3+5x/2=19. Created by barbi2001. algebra-ru

2=19...

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1) x/4+x/3=7
3x/12 + 4x/12 = 7
7x/12 = 7
x = 12
2)2x/5+x/2=9
4x/10 + 5x/10 = 9
9x/10 = 9
x = 10
3)5x/4-x/2=3
5x/4 - 2x/4 = 3
3x/4 = 3
x = 4
4)4x/5-x/10=7
8x/10 - x/10 = 7
7x/10 = 7
x = 10
5)3x/4+5x/6=38
9x/12 + 10x/12 = 38
19x/12 = 38
x = 24
6)2x/3+5x/2=19
4x/6 + 15x/6 = 19
19x/6 = 19
x = 6

11 votes Thanks 31

Рeнaткоу

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1) 3х+4х =7
      12
3х+4х+84
7х=84
х=12
2) 10х+5х=9
10
15х=90
х=6
3) 5х-2х=3
   4
3х=12
х=4
4) 8х-х=7
   10
7х=70
х=10
5) 9х+10х=38
   12
19х=456
х=24
6) 4х+15х=19
   6
19х=114
х=6

6 votes Thanks 10

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