Question

209 Solve by the method of substitution : 2x+3y-10 and 3x-y
OR.
20.) Solve the method of cross multiplication : 2x-5-4 0 and 31 -
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Answer 1

Answer:

X= 10/11

Step-by-step explanation:

3x-y= 0

we get,

y= 3x

Substituting the value of y in equation 1

2x + 3(3x) = 10

2x + 9x =10

11x= 10

X= 10/11

hope you understand....

Answer 2

Answer:

2x+3y-10 and 3x-y-209

Step-by-step explanation:

2x+3y=10

3x-y=209

equation 1 multiply by 3 and equation 2 multiply by 2

6x+9y=30

6x-2y=418

11y = 388

y =388/11