Question

Friends please help... Class 9 Maths

Answer 1

$1) Given \: 4x+3y = 55$

$Substitute \: y = 5 \: in \:the \: equation , we \:get$

$\implies 4x + 3 \times 5 =55$

$\implies 4x + 15 =55$

$\implies 4x =55 - 15$

$\implies 4x = 40$

$\implies x = \frac{40}{4}$

$\implies x = 10$

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