Answer:
a) 16-x=x+4
add x to both sides
16=2x+4
subtract 4 from both sides
12=2x
divide both sides by 2
x=6
b) (8-x)-5=2
add 5 to both sides
8-x=7
add x to both sides
8=7+x
subtract 7 from both sides
x=1
c) 4+x=x+4
subtract 4 from both sides
x=x
x belongs to all real numbers.
Answer:
A) 16-x=x+4
+x +x
-----------------
16=2x+4
-4 -4
--------------
12=2x
---- ---
2 2
x=6
D)6 (x=6)
B) (8-x)-5=2
8-x-5=2
Combine like terms (8-5)
3-x=2
-3 -3
-----------
-1x=-1
-- --
-1 -1
B=1
x-1 so your answer is 1
C) 4+x=4+x
From telling there is going to be no solution but still solve it
4+x=4+x
-4 -4
---------------
0+x=x
-x -x
--------------
0=0x
-- ---
0 0
B is your answer (X=0)
Hope this helped :D
