Реши уравнение 7•7-(7•9-19)+a•4=29

Question

Реши уравнение 7•7-(7•9-19)+a•4=29

Answer 1

7*7-(7*9-19)+a*4=29
49-(63-19)+4a=29
49-63+19+4a=29
5+4a=29
4a=29-5
4a=24
a=24/4
a=6

Answer 2

49-(63-19)+4a = 29
49-44+4a = 29
4a = 29-5
a = 24/4
a = 6