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Intermediate Algebra

OPENSTAX

$Math Studyset Vaia Explanations$ Math

OER 2017 Edition · 1346 pages

ISBN: 9780998625720

Chapter 2: Q. 187 (page 144)

Solve for the formula for y:
$x - y = - 4$ .

Short Answer

Expert verified

The solution is $y = 4 + x$ .

Step by step solution

01

Given information:

Consider the equation,

$x - y = - 4$

02

Step 2:

Add $(- x)$ on both sides,

$x - y - x = - 4 - x$

03

Step 3

On simplifying, we get,

$- y = - 4 - x$

04

Step 4:

Multiply by $(- 1)$ to make the coefficient of y as one,

$(- 1) \times (- y) = (- 1) \times (- 4 - x)$

we get,

$y = 4 + x$

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