a) ( x - 47 ) - 115 = 0
( x - 47 ) = 0 + 115
( x - 47 ) = 115
x = 115 + 47
x = 162
b) 315 + ( 146 - x ) = 401
( 146 - x ) = 401 - 315
146 - x = 86
x = 146 - 86
x = 60
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\(a)\)\(\left(x-47\right)-115=0\)
\(\left(x-47\right)=0+115\)
\(x-47=115\)
\(x=115+47\)
\(x=162\)
\(b)\)\(315+\left(146-x\right)=401\)
\(\left(146-x\right)=401-315\)
\(146-x=86\)
\(x=146-86\)
\(x=60\)