Simple calculation: 48 out of 35 divided by 13 out of 19 plus 22 out of 35 divided by 13 out of 19
(48/35)/(13/19)+(22/35)/(13/19)
=(48/35+22/35)/(13/19)
=2/(13/19)
=38/13
Simple calculation: 48 / 35 / 13 / 19 + 22 / 35 / 13 / 19
=(48/35+22/35)÷13/19
=2×19/13
=38/13
=2 and 12 / 13
x: 7 / 12 = 3 / 14 (solving equation)
x:7/12=3/14
x=7/12*3/14
x=1/8
X-12.7 = 13 solution equation
x=12.7+13