y=7-x
x + y= 500
120x + 35y= 500
(35+120) (x + y)= 500
35x + 120y= 500
The sum of 130 cm and 50 mm. in meters is 1.35 m.
The unitarymethod is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. The unitary method is a method by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit.
We are given the sum of 130 cm and 50 mm. in meters
130 cm = 130 / 100
= 1,3m
50 mm = 50 / 1000
= 0,05m
Therefore, the addition is;
1.3 + 0.05m = 1.35m
Learn more about the unitary method, please visit the link given below;
#SPJ2