Question

3 upon 7 plus a is equal to 17upon 7

Answer 1

3 / 7 + a = 17 / 7

=> a = 17 / 7 - 3 /7

=> a = ( 17 - 3) / 7

=> a = 14 / 7

=> a = 2

Answer 2

$3 \div 7 + a = 17 \div 7 \\ \\ a = 17 \div 7 - 3 \div 7 \\ \\ a = 14 \div 7 \\ a = 2$
hope it helps u..