Answer:
x = 10
y = 25
Step-by-step explanation:
if you add the equations as they are then the 'y-term' is eliminated:
60x = 600
substitute x=10 to find value of 'y':
40(10) + 4y = 500
400 + 4y = 500
4y = 100
Check:
20(10) - 4(25) should equal 100
200 - 100 = 100
100 = 100
Two similar triangles.
10/26 = y/13
y = 5
x² = 13² - y² = 144
x = 12
its a ...............................
