Question

7x-5y=11;3x+4y=17 simplfy ​

Answer 1

Answer:

x = 3 and y = 2

Step-by-step explanation:

7x-5y = 11

7x = 11 + 5y

x = 11+5y --------- 1

7

3x+ 4y = 17 -------------- 2

Assuming value of x from eq. 1 in eq. 2

3 × (11+5y/7) + 4y = 17

33+15y + 4y = 17

7

33+15y +28y = 17

7

33+43y = 17

7

Cross Multiplying:

17×7 = 33+43y

119 = 33+43y

119-33=43y

86 = 43y

y = 86/43

y = 2

Now putting value of y in eq. 1

x = 11+5×2

7

x = 11+10

7

x = 21/7

x = 3