Answer:
x =-1
Step-by-step explanation:
[tex]\left \{ {{2y = 6x +10} \atop {y = 2x +4}} \right.[/tex]
replace y by 2x +4 in the first equation
2(2x + 4) = 6x + 10
4x + 8 = 6x + 10
-2x +8 = 10
-2x = 2
x = -1
