Question

Solve the pair of linear equations 2x+y=7 and 3x+2y=12

Answer 1

Answer:

Use elimination method...dude

Step-by-step explanation:

Hope you will....

Answer 2

Step-by-step explanation:

This question can be done by trial and hit method.

i) Firstly, let us try with (-3, 2)

Then, In first Equation - 2x + y = 7 ⇒ 2 (-3) + 2 = 7 ⇒ -4 = 7

∵ It does not satisfy with 1st equation, it is the wrong option.

ii) Secondly, let us try with (1, 0)

Then, In first Equation - 2x + y = 7 ⇒ 2 (1) + 0 = 7 ⇒ 2 = 7

∵ It does not satisfy with 1st equation, it is the wrong option.

iii) Thirdly, let us try with (3, 2)

Then, In first Equation - 2x + y = 7 ⇒ 2 (3) + 2 = 7 ⇒ 8 = 7

∵ It does not satisfy with 1st equation, it is the wrong option.

iv) Lastly, let us try with (2, 3)

Then, In first Equation - 2x + y = 7 ⇒ 2 (2) + 3 = 7 ⇒ 7 = 7

Then, In second Equation - 3x + 2y = 12 ⇒ 3 (2) + 2 (3) = 12 ⇒ 12 = 12

∵ It does satisfy with both 1st and 2nd equation, it is the correct option.