To solve the equations: 2x + 3Y = 16 & nbsp; ① x + 4Y = 13 & nbsp; ②

To solve the equations: 2x + 3Y = 16 & nbsp; ① x + 4Y = 13 & nbsp; ②

① The solution is: y = 2. Substituting y = 2 into ①, we get: x = 5. So the solution of the original equation system is x = 5Y = 2

The following equations are solved by means of image method. (1) {2x + 3Y = 5,3x-y = 2 (2) {2x-y = 3,3x + 2Y = 8)

Dare to ask for image method, XY must be an integer (at most with 0.5)
Find the intersection point of the line and the axis on the X-Y coordinate graph, and connect the line graph; the intersection point of the two lines is the most desired
Image method is often used for classification discussion, giving limited conditions, or guessing the approximate answer range. When filling in the blank, it will also directly solve the image problem

Solving equations x + 2Y = 3, 6x-5y = 1 by image method

Draw a function image to see the intersection coordinates of the image

The following equations are solved by substitution method: y = - 2x x + 2Y = 3

x+2y=3
x=3-2y
y=-2(3-2y)
y=-6+4y
3y=6
y=2
x=-1