Question

$5y - 1 = 3y + 4$
pls give the answer
$7(x + 4) = 2x - 7$
pls give the answer
best answer will get brainliest​

Answer 1

Answer 1 :-

$\longmapsto \rm5y - 1 = 3y + 4$

Putting the constant and variable terms on different sides by the method of transposition,

$\rm \longmapsto 5y - 3y = 4 + 1$

On simplifying,

$\rm \longmapsto 2y = 5$

Transposing 2 from LHS to RHS, changing it's sign,

$\longmapsto \underline{ \boxed{\rm y = \dfrac{5}{2}}}$

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Answer 2 :-

$\longmapsto\rm7 \: (x + 4) = 2x - 7$

Removing the brackets by multiplying 7 with x and 4,

$\rm \longmapsto 7x + 28 = 2x - 7$

Putting the constant and variable terms on different sides by the method of transposition,

$\rm\longmapsto 7x - 2x = - 7 - 28$

On simplifying,

$\longmapsto \rm 5x = - 35$

Transposing 5 from LHS to RHS, changing it's sign,

$\longmapsto \rm x = \dfrac{ - 35}{ \: \: \: \: 5}$

Dividing -35 by 5,

$\longmapsto \underline{ \boxed{\rm x = - 7}}$

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