A.71 – (33 + x) = 26
33+x=71-26
33+x=45
x=45-33
x=12
B.(x + 73) – 26 = 76
x+73=76+26
x+73=102
x=102-73
x=29
C.45 – (x + 9) = 6
x+9=45-6
x+9=39
x=39-9
x=30
D.89 – (73 – x) = 20
73-x=89-20
73-x=69
x=73-69
x=4
E.(x + 7) – 25 = 13
x+7=13+25
x+7=38
x=38-7
x=31
F.|x+2|=0
=>x+2=0
x=0-2
x=-2
G.| x - 5| = |-7|
|x-5|=7
\(\left[ \begin{array}{l}x-5=7\\x-5=-7\end{array} \right.\)
\(\left[ \begin{array}{l}x=7+5\\x=-7+5\end{array} \right.\)
\(\left[ \begin{array}{l}x=12\\x=-2\end{array} \right.\)
H.| x - 3 | = 7 - ( -2)
|x-3|=9
\(\left[ \begin{array}{l}x-3=9\\x-3=-9\end{array} \right.\)
\(\left[ \begin{array}{l}x=9+3\\x=-9+3\end{array} \right.\)
\(\left[ \begin{array}{l}x=12\\x=-6\end{array} \right.\)
I.( 7 - x) - ( 25 + 7 ) = - 25
7-x-25-7=-25
-x=-25-7+25+7
-x=0
=>x=0
J.| x - 3| = |5| + | -7|
|x-3|=5+7
|x-3|=12
\(\left[ \begin{array}{l}x-3=12\\x-3=-12\end{array} \right.\)
\(\left[ \begin{array}{l}x=12+3\\x=-12+3\end{array} \right.\)
\(\left[ \begin{array}{l}x=15\\x=-9\end{array} \right.\)
