Question

Solve using substitution method 6x-y=70 5y=x

Answer 1

Answer:

70

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

$\implies \tt6x - y = 70 \qquad \qquad \ldots \ldots(1)$

$\implies \tt 5y = x\qquad \qquad \ldots \ldots(2)$

$\implies \tt \: put \: \: the \: \: value \: \: in \: eq. \: (2)$

$\implies\tt \: 6(5y) - y = 70 \: \: \qquad \bigg[put \: \: value \: of \: x = 5y \: in \: \: eq. \: \: (1) \bigg]$

$\implies\tt \: 30y - y = 70$

$\implies \tt \: 29y = 70$

$\implies \tt y = \dfrac{70}{29}$

$\implies \tt \: put \: \: the \: \: value \: \: in \: eq. \: (2)$

$\implies \tt \: x = 5y \\ \\\implies \tt x = 5 \bigg( \frac{70}{29} \bigg) \\ \\ \implies \tt \: x = \frac{350}{29}$