Respuesta :
Answer:
- n = -11 / 9
- c = 49 / 48
- f = -2 / 9
- k = -13 / 9
- y = 23 / 24
- b = 19 / 10
Step-by-step explanation:
1. 5+9(1+4n)=-30
-5 -5
--------------------
9 (1 + 4n) = -35
/9 /9
----------------------
(1 + 4n) = -35/9
1 + 4n = -35/9
-1 -1
------------------------
4n = -44/9
/4 /4
-----------------------
n = -11/9
2. 6(3-8c)=-31
/6 /6
---------------------
(3 - 8c) = -31/6
3 - 8c = -31/6
-3 -3
---------------------
-8c = -49/6
/-8 /-8
-----------------------
c = 49/48
3. -21=8+9(f-3)
8 + 9 (f - 3) = -21 we switched sides here
-8 -8
------------------------
9 (f - 3) = - 29
/9 /9
-------------------------
f - 3 = -29/9
+3 +3
--------------------------
f = -2/9
4. 9k-7-5=-25
9k - 12 = -25
+12 +12
--------------------
9k = -13
/9 /9
--------------------
k = -13/9
5. 8(3y-6)=-25
/8 /8
------------------------
(3y-6) = -25/8
3y - 6 = -25/8
+6 +6
-----------------------
3y = 23/8
/3 /3
-----------------------
y = 23/24
6. 16=-5(2b-7)
-5(2b-7) = 16 we switched sides here
/-5 /-5
--------------------
(2b-7) = -16/5
2b - 7 = -16/5
+7 +7
--------------------
2b = 19/5
/2 /2
---------------------
b = 19/10
