How do you solve $y = x + 3$ $y=x+3$ and $y = 2 x - 4$ $y=2x-4$ using substitution?

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How do you solve $y = x + 3$ $y=x+3$ and $y = 2 x - 4$ $y=2x-4$ using substitution?

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Answer 1 · 2016-03-09T20:40:30

x = 7 , y = 10

Explanation:

The 2 equations are both given in terms of x , hence can be equated directly.

thus : 2x - 4 = x + 3

collect x terms to left and numbers to right

$\Rightarrow x = 3 + 4 = 7$ $rArr x = 3+4 = 7$

now substitute x = 7 into y = x + 3 ( or y = 2x - 4 )

hence y = 7 + 3 = 10

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How do you solve $y = x + 3$ $y=x+3$ and $y = 2 x - 4$ $y=2x-4$ using substitution?

1 Answer

Explanation:

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Science

Math

Humanities

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How do you solve y=x+3y=x+3y=x+3 and y=2x-4y=2x−4y=2x-4 using substitution?

1 Answer

Explanation:

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Impact of this question

How do you solve $y = x + 3$ $y=x+3$ and $y = 2 x - 4$ $y=2x-4$ using substitution?