contestada

PLEASE HELP....... Solve the system of equations using the Addition method. 2a + 3b = -1 3a + 5b = -2

Respuesta :

dannielle
2a+3b  = -1      | *3
3a +5b = -2       |* -2

6a+ 9b = -3
-6a -10b = 4
------------------
/      -b =1
         b= -1

2a + 3b= -1
2a + 3* -1 = -1
2a -3= -1
2a = 3-1
2a=2
a=2:2
a=1

Otras preguntas