if the HCF of 420 and 130 can be expressed in the form of 3 X + 4 find x
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Hcf of 420 and 130:
130/420/3
390
30/130/4
120
10/30/3
30/0
therfore:hcf=10
3x+4=10
3x=6
x=6÷3
x=2
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