Question

7/12x-0,5=1,25
5/6x-4,15=2,1
2,7+2/9y=4,3

Answer 1

7/12x = 1,25+0,5
7/12x = 1,75
x = 1,75 ÷ 7/12
x = 3

5/6x = 2,1 + 4,15
5/6x = 6,25
x = 6,25 ÷ 5/6
x = 7,5

2/9y = 4,3 - 2,7
2/9y = 1,6
y = 1,6 ÷ 2/9
y = 7,2