Question

3x-4y=10;4x+3y=5 solve by substitution method

Answer 1

Answer

Step-by-step explanation:

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Answer 2

Answer:

x=2 and y= -1

Step-by-step explanation:

3x-4y=10 .....eq(1)

4x+3y=5 ......eq(2)

from eq(1)

3x-4y=10

3x=10+4y

x=4y+10 ......eq(3)

3

substitute (3) in (2)

4(4y+10)+3y=5

3

16y+40+9y=5

3

25y +40=15

25y=15-40

y=-25/25

y= -1 .......eq(4)

substitute (4) in (3)

x=4( -1)+10

3

x= -4+10

3

x= 6/3

x=2