Question

Y=6xy = 5x + 7 substitution

Answer 1

Explanation:

hello :

y=6x...(*)

y = 5x + 7...(**)

by (*) put the value of y in(**) :

6x=5x+7

6x-5x=7

x=7 but y=6x so : y=42

the system solution is (7,42)