Question

4x+7y=29 , x+3y=11 in substitution meathod​

Answer 1

Answer:

x = 2 ; y = 3

Step-by-step explanation:

x + 3y = 11

x = 11 - 3y -------- equation 1

4x + 7y = 29

substitute equation 1 in this

4(11 - 3y) + 7y = 29

44 - 12y + 7y = 29

44 - 5y = 29

- 5y = 29 - 44

-5y = - 15

y = 3

substitute y = 3 in equation 1

x = 11 - 3(3)

x = 11 - 9

x = 2

HOPE THIS ANSWER HELPS YOU ✍✍ ....

Answer 2

Step-by-step explanation:

${ {3}^{2} }^{3}  \times  {(2 \times  {3}^{5}) }^{ - 2}  \times  {18}^{2 }  \\  \\  =  {3}^{6}  \times  \frac{1}{4 \times  {3}^{10} }  \times  {18}^{2}  \\  \\  =  \frac{ {18}^{2} }{4 \times  {3}^{4} }  \\  \\  =  \frac{ \cancel{18 } \: ^{ \cancel{6}} \: ^{ \cancel{2}}\times { \cancel{18}}  \: ^{ \cancel{6 }} \:  ^{ \cancel{2}} \:  ^1 }{ { \cancel{4 }\:_1}\times { \cancel{3} \: _1} \times { \cancel{3 } \: _1}\times { \cancel{3} \:_1} \times { \cancel{3} \: _1} }  \\  \\  = { \huge{ \red{ \boxed{1}}}}$