2,7+1,9=2х+1,513/18х+13=7/12х+8

Question

2,7+1,9=2х+1,5
13/18х+13=7/12х+8

Answer 1

2,7 + 1,9 = 2X + 1,5 
2X = 2,7 + 1,9 - 1,5 
2X = 3,1 
X = 1,55 
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13/18X + 13 = 7/12X + 8 
7/12X - 13/18X = 13 - 8 
21/36X - 26/36X = 180/36 
21X - 26X = 180 
- 5X = 180 
X = - 36