★Answer

$\red{13(y + 7) = 3(y - 1)} \\ \\ \color{red}\dashrightarrow \: 13y + 91 = 3y - 3 \\ \\ \color{pink} \dashrightarrow \: 13y - 3y = - 3 - 91 \\ \\ \pink{ \dashrightarrow \: 10y = - 94} \\ \\ \purple{ \dashrightarrow \: y = \frac{ \cancel{- 94} {}^( - 47) }{ \cancel{10} {}^(5) } }\\ \\ \green{ \dashrightarrow \: y = ( - 47)/(5) }$

Question 3

★To Solve :

$\rm\blue{13(y+7) = 3(y-1)}$

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★SOLUTION :

$\rm\red\leadsto{13(y+7) = 3(y-1)}$

$\rm\red\leadsto{13*{y}+13*7= 3*{y}-3*1}$

$\rm\red\leadsto{13y+91=3y-3}$

$\rm\red\leadsto{13y-3y=-3-91}$

$\rm\red\leadsto{10y=-94}$

$\rm\red\leadsto{} y =\frac{ { \cancel{-94}}^( \:-45 ) }{ { \cancel{10}}^( \: 5) }$

$\rm\red\leadsto{y=}(-47)/(5)$

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