Question

a) (y – 607 200) : 305 = 642 + 318

 

c) (1780 – 973) x (75 : y) = 2401 + 20

Answer 1

a)\(\left(y-607200\right):305=642+318\)

⇔\(\left(y-607200\right):305=960\)

⇔\(y-607200=292800\)

⇔\(y=900000\)

Answer 2

a)

Answer 3

c)\(\left(1780-973\right)\left(75:y\right)=2401+20\)

⇔\(807\left(75:y\right)=2421\)

⇔\(75:y=3\)

⇔\(y=25\)