Question

how to solve,(30-x)=(30-17)​

Answer 1

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30 - x = 30 - 17

30 - x = 13

- x = 13 - 30

- x = - 17

x = 17

Answer 2

Answer:

$\left(30-x\right)=\left(30-17\right)\quad :\quad x=17$

Step-by-step explanation:

$\left(30-x\right)=\left(30-17\right)$

$\gray{\mathrm{Subtract\:the\:numbers:}\:30-17=13}$

$30-x=13$

$\gray{\mathrm{Subtract\:}30\mathrm{\:from\:both\:sides}}$

$3 0 - x - 3 0 = 1 3 - 3 0$

$\gray{\mathrm{S i m p l i f y }}$

$- x = - 1 7$

$\gray{\mathrm{ D i v i d e \: b o t h \: s i d e s \: b y \: } - 1 }$

$\displaystyle \frac{ - x }{ - 1 } = \frac{ - 1 7 }{ - 1 }$

$\gray{\mathrm{ S i m p l i f y }}$

$x = 1 7$