Question

Me ajuda por favor.
calcule
(a) 2 c+4= 12 -2 c =
(b) 2 a +5 = - 7 -a=

Answer 1

a)
2c + 4 = 12 - 2c
2c + 2c = 12 - 4
4c = 8
c = 8/4
c = 2

b)
2a + 5 = -7 -a
2a + a = -7 - 5
3a = -12
a = -12/3
a = -4

Answer 2

a)2c+4=12-2c
   2c+2c=12-4
   4c=8
   c=8/4
   c=2
b)2a+5=-7-a
   2a+a=-7-5
   3a=-12
   a=-12/3
   a=-4