GIVEN
[tex] \\ [/tex]
If 2x-50=30, then x=5
- The given value of x is wrong. The value of x should be equal to 40 to equal.
[tex] \\ [/tex]
[tex] \\ \bold{TESTING : } \\ [/tex]
[tex] \\ \sf{if \: x = 5} \\ \\ 2x - 50 = 30[/tex]
Change x to the given value
[tex] \\ 2(5) - 50 \: \: ? = ? \: \: 30 \\ [/tex]
Multiply
[tex] \\ 10 - 50 \: \: ? = ? \: \: 30 \\ [/tex]
[tex] \\ - 40≠30 \\ \\ [/tex]
[tex] \\ \sf{if \: x = 40} \\ [/tex]
[tex] \\ 2(40) - 50 = 30 \\ \\ 80 - 50 = 30 \\ 30 = 30[/tex]
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