Question

Two sides of an isosceles triangle are given by equation 7 x minus y + 3 is equal to zero and x + y - 3 = 20 and

Answer 1

Answer:

x=13/7 and y =10

Step-by-step explanation:

7x-y=-3 (1)

7x+y=23 (2)

add equation 1 and 2

7x-y=-3

7x+y=23

__________

14x=26

x=26/14

x=13/7

put x=13/7 in equation 2

7×13/7+y=23

13+y=23

y=23-13

y=10