Math, asked by mansichaudhuri12, 7 months ago

12. Find the number of pairs (x, y) satisfying the simultaneous equations 3x –5y=9
24x - 72 = 42y.

Answers

Answered by niranjanasathish

2

Answer:

(x,y) = (3,0)

Step-by-step explanation:

3x - 5y = 9 -------(1)

24x - 42y = 72 -------(2)

24x - 40y = 72

24x - 42y = 72

==> 2y = 0 => y = 0

Substituting y = 0 in (1)

3x -5(0) = 9 => 3x = 9 => x = 3

Previous Question

Next Question

Similar questions

English, 3 months ago

Put in the infinitive or gerund form of the verbs in brackets. 1. Its no use _____________ (cry) over spilt milk. 2. This examination is not worth _____________ (worry) about. 3. After _____________ (register) for the course, please come and see me. 4.I am pleased _____________ (announce) the new President of our company. 5. I would like to remind you _____________ (bring) some...

Math, 3 months ago

give an example to show that the sum of two irrational number may be an irrational number...

Physics, 3 months ago

If we ignore the air resistance on the horizontal motion of the projectile what will happen on the component?

Math, 7 months ago

One hundred fifty spherical marbles, each of 14cm, are dropped in cylindrical vessel of diameter 7cm containing some water and are completely immersed in water. Find the rise in the level of water in the vessel.

Math, 7 months ago

the additive inverse of -7upon 19 is...

Math, 11 months ago

(y-1.5)(y-0.5)(y+0.5)(y+1.5)=24...

English, 11 months ago

complaing about smoking in public to editor...

Chemistry, 11 months ago

where electric current is passed through molten Aluminium oxide the following reaction take place 2Al2 O3 -------> 4Al+3O2 Name the type of reaction to when use reaction are made in induatry...