Question

3x/10+12. = 4x/10-28 ​

Answer 1

Answer:

$\frac{3x}{10} + 12 = \frac{4x}{10} - 28 \\ \frac{3x + 120}{10} = \frac{4x - 280}{10} \\ 3x + 120 = \cancel{10} \times \frac{4x - 280}{ \cancel{10}} \\ 3x + 120 = 4x - 280 \\ 3x - 4x = - 280 - 120 \\ \cancel- x = \cancel - 400 \\ \purple{ \fbox{ \red{x = 400}}}$

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Answer 2

Answer:

$\frac{3x}{10} + 12 = \frac{4x}{10} - 28 \\ \frac{3x + 120}{10} = \frac{4x - 280}{10} \\ 3x + 120 = \cancel{10} \times \frac{4x - 280}{ \cancel{10}} \\ 3x + 120 = 4x - 280 \\ 3x - 4x = - 280 - 120 \\ \cancel- x = \cancel - 400 \\ \purple{ \fbox{ \red{x = 400}}}$

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