Question

3x-4y=10 and 4x+3y=5 solve it by substitution​

Answer 1

Answer:

3x-4y=10

3x= 10+4y

x= (10+4y)/3

by putting the value in other equation.

4x+3y= 5

4{(10+4y)/3}+3y= 5

40+16y+3y= 5

40+19y= 5

19y= -35

y= -35/19.

by putting the value in equation 1.

3x-4y= 10

3x-4(-35/19)= 10

3x+140/19= 10

3x= 10-(140/19)

3x= (190-140)/19

3x= 50/19

x= (50/19)*1/3

x= 50/57

therefore x= 50/57 and y= -35/19.

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Answer 2

Answer:

X=2 and y=-1

Step-by-step explanation:

hope it helps

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