Question

Me ayudan a contestar las ecuaciones
2x=10-y
2x=6+y

8a-7b+4
6a-3b-6

m=2+n
m=-4+3n

Answer 1

2x + y = 10
2x - y = 6
-------------------
4x = 16
x =4 ; y =2

8a -7b = -4 *(3)
6a -3b = 6 *(-7)
---------------------
24a -21b = -12
-42a +21b =-42
-------------------------
-18a = -54
a =3 ; b = 4

m = 2 + n *(-1)
m =-4 + 3n
--------------------
-m = -2 -n
m = -4 +3n
-------------------
0 = -6 +2n
2n = 6
n = 3 ; m = 5