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22:2= 11
11+4=15
x= 15
y=11
y+4=x
x+y=26
y=x-4
x+(x-4)=26
y=x-4
x+x-4=26
y=x-4
2x=30 /:2
y=x-4
x=15
y=15-4
x=15
y=11
x=15
AD 2
(a+b)/2=24
a/b=5/3
x + 4 = y
x + y = 26
B)
(a + b)/2 = 24
a/b = 5/3