a) \(980+y:94=8245\)
\(y:94=7265\)
\(y=7265\times94\)
\(y=682910\)
b) \(45\times y\times36=3240\)
\(45\times y=3240:36\)
\(45\times y=90\)
\(y=90:45\)
\(y=2\)
c) \(3865-y+875=1000\)
\(3865-y=125\)
\(y=3865-125\)
\(y=3740\)
d) \(4788:126\times y=1596\)
\(126\times y=4788:1596\)
\(126\times y=3\)
\(y=\dfrac{3}{126}\)
\(y=\dfrac{1}{42}\)
e) \(24624:y:9=76\)
\(y:9=24624:76\)
\(y:9=324\)
\(y=324\times9\)
\(y=2916\)