Question 341869
let the base = x
let congruent side be y
2y+x=36 .....................1
2y= x/2 +12
multiply by 2
4y=x+24
4y-x=24.......................2
add eq 1 & eq 2
6y=36+24
6y=60
divide by 6
y= 60/6 
y=10 conguent side
plug value of y in equation 1
2*10+x=36
20+x=36
x=36-20
x=16 the base
CHECK
16+10+10 = 36

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