In the following question, correct the equation by interchanging the two signs.
$$7 + 10 ÷ 5 - 5 $$= 10
We can interchange the symbols of the given equation $$7 + 10 ÷ 5 - 5 $$= 10 in three ways,
1. Interchanging $$\div and +$$, we get $$7 ÷ 10 + 5 - 5 $$= 10
solving this equation , $$7 ÷ 10 + 5 - 5 $$ = $$ \frac{7} {10} + 5 - 5 $$
=$$\frac{7}{10}$$
= 0.7
0.7 is not equal to 10. so this is not the answer.
2. Interchanging $$\div and -$$, we get $$7 + 10 - 5 ÷ 5 $$= 10
solving this equation , $$7 + 10 - 5 ÷ 5 $$ = $$7 + 10 - \frac{5} {5} $$
=$$7 + 10 - 1$$
= 16
16 is not equal to 10. so this is not the answer.
3. Interchanging $$+ and -$$, we get $$7 - 10 ÷ 5 + 5 $$= 10
solving this equation , $$7 - 10 ÷ 5 + 5 $$ = $$7 - \frac {10}{5} +5 $$
=$$7 - 2 + 5$$
= 10
10 is not equal to 10. LHS = RHS . so, $$+ and -$$ is the answer.
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