Respuesta :
3x + 1 = 4x - 7
3x - 4x = -7 - 1
-x = -8
x = 8 <==
y = 3x + 1
y = 3(8) + 1
y = 24 + 1
y = 25 <===
solution is (8,25)
3x - 4x = -7 - 1
-x = -8
x = 8 <==
y = 3x + 1
y = 3(8) + 1
y = 24 + 1
y = 25 <===
solution is (8,25)