PAxPB=PCxPD
a) 4.9=3.X
3x=36
x= 36/3
x= 12
b) 8x.8=18.6
64x=108
x=108/64
x= 1,6875
c) 2x.x=9.8
2x²=72
x²= 72/2
x²= 36
x²= 6
d) 3.27=x.x
x²= 81
x²= 9
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PAxPB=PCxPD
a) 4.9=3.X
3x=36
x= 36/3
x= 12
b) 8x.8=18.6
64x=108
x=108/64
x= 1,6875
c) 2x.x=9.8
2x²=72
x²= 72/2
x²= 36
x²= 6
d) 3.27=x.x
x²= 81
x²= 9