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Mathematics
OpenStudy (anonymous):

x+7=21

OpenStudy (anonymous):

14.

OpenStudy (anonymous):

Subtract 7 on both sides. x+7-7=21-7 x=14.

OpenStudy (saifoo.khan):

\[\Huge \color\red {x = 14}\]

OpenStudy (anonymous):

see here: \[x+7=21\] transpose 7 to right hand side \[x=21-7\] \[x=14\] or \[x+7=21\] subtract both sides by 7 \[x+7-7=21-7\] \[x=14\] it is ur choice to chose the method , answers are same in both processes

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