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Mathematics

Grade-8

Easy

Question

On subtracting 30 from two times a number, we get 56. This statement in the simplified form of an equation is

x – 15 = 28
2x + 30 = 56
30 – 2x = 56
$\frac{30}{2 x}$ = 56

The correct answer is: x – 15 = 28

$space x minus 15 space equals 28 space comma space i s space t h e space c o r r e c t space c h o i c e L e t space t h e space n u m b e r space i s space equals space x t w o space t i m e s space t h e space n u m b e r space equals space 2 x o n space S u b t r a c t i n g space 30 space f r o m space t w o space t i m e s space t h e space n u m b e r space equals space 2 x space – space 30 space t h e r e f o r e T h e space r e q u i r e d space e q u a t i o n space i s space 2 x space – space 30 space equals space 56 space space left parenthesis a c c o r d i n g space t o space q u e s t i o n right parenthesis space space 2 x space – space 30 space equals space 56 2 space left parenthesis space x space minus space 15 space right parenthesis space equals 56 x minus 15 space equals space 56 over 2 equals 28 s o space x minus 15 space equals 28 space i s space t h e space a n s w e r$

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