Question

What number should be added to –3/7 so as to get 1

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Answer 1

Answer:

+2/7

is the answer mate

Answer 2

Given-

• A number that is added to-3/7 to get 1

Concept use-

• $\bf \frac{ - 3}{7} + a \: number = 1$

Solution-

• Let the number be x

$\bf \frac{ - 3}{7} + x = 1 \\ \implies \bf\frac{ - 3 + 7x}{7} = 1 \\ \implies \bf \: - 3 + 7x = 7 \\ \implies \bf \: 7x = 7 + 3 \\ \implies \bf \: 7x = 10 \\ \implies \huge \underline{ \boxed{ \bf \: x = \frac{10}{7} }}$

Hence the required number is 10/7 if u want to take this in the form of decimal then divide it

$\bf \: x = \frac{10}{7} \\ \underbrace{ \boxed { \huge \bf \: x = 1.4285....}}$

Verification

$\bf\frac{ - 3}{7} + \frac{10}{7} = 1 \\ \bf \implies \frac{7}{7} = 1 \\ 1 = 1$

LHS=RHS

Hence proved