X / 2 + Y / 3 = 2, 2x + 3Y = 19

X / 2 + Y / 3 = 2, 2x + 3Y = 19

x/2+y/3=2
Deformation: 3x + 2Y = 12
2x+3y=19②
①×3-②×2
9x-4x=36-38
5x=-2
x=-2/5
∴y=[12-3×(-2/5)]÷2=33/5
That is: the solution of the equations is x = - 2 / 5; y = 33 / 5

Solve the equation, 2x + y equals 7, 2x + 5Y equals 19
Binary linear equation, x equals more, y equals more

Type 1-2
-4y=-12
y=3
Substituting 1
Then x = 2

Solution equation: 3 / 5x + 20 = 1.2x

3/5x+20=1.2x
3/5x+20=6x/5
6x/5-3x/5=20
3x/5=20
3x=100
x=100/3

Solving equation 5x 4-5 2x = 2 1

The original equation is
4/（5x)-(2x)/5=1/2
It is reduced to 4x ^ 2 + 5x-8 = 0, and X is not equal to 0
The solution is x = (- 5 ± 3 root sign 17) / 8