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Answer 1

$\huge\underline\mathfrak\red{Answer⤵}$

Ans 1)18

Solution:5×54=15×(x)

x=270/15

x=18

Ans 2)66

Solution:11×90=15×(x)

x=990/15

x=66

Ans 3) 9

Solution:12×54=72×(x)

x=648/72

x=9

Ans 4)25740

Solution:1716×105=7×(x)

x=180180/7

x=25740

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Answer 2

$\large { \underline{ \bf \red{Solution:- }}}$

$\large { \underline{ \bf \pink{Q.1:- }}}$

$⟶5×54=15×(x)$

$⟶x= \frac{250}{15}$

$⟶x=18$

$\large { \underline{ \bf \purple{Q.2:- }}}$

$⟶11×90=15×(x)$

$⟶x= \frac{990}{15}$

$⟶x=66$

$\large{ \underline{ \bf \green{Q.3:- }}}$

$⟶1716×105=7×(x)$

$⟶x= \frac{180180}{7}$

$⟶x=25740$

$\large { \underline{ \bf \blue{Q.4:- }}}$

$⟶12×54=72×(x)$

$⟶x= \frac{648}{78}$

$⟶x=9$

$\large { \underline{ \bf \orange{Therefore:- }}}$

• 1. ⟶ x = 18
• 2. ⟶ x = 66
• 3. ⟶ x = 25740
• 4. ⟶ x = 9