Question

3X+5Y=12 5X+3Y=4 solve using substitution

Answer 1

Answer:

Step-by-step explanation: Here we have two equation

3x+5y=12. Eqn1

5x+3y=4. Eqn2

So , we multipy the eqn1 by 5 and eqn2 by 3

We get,

15x+25y=60 eqn 3

15x+9y=12. eqn4

By dividing eqn3/eqn4

We get

16y=48

y=3

And putting the value of y in eqn 1 we get,

3x+5(3)=12

3x+15=12

3x=-3

x=-1

Answer 2

Answer:

Step By-step explanation

3X+5Y=12  ----- 1

5X+3Y=4   -----2

  FROM EQUATION 2

X= 4 - 3Y/5

 SUBSTITUTING THESE VALUE IN EQUATOIN 1