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How do you solve $7 x + 3 = 4 x - 18$ $7x + 3= 4x - 18$ ?

1 Answer

May 9, 2018

$x = (- 7)$ $x=(-7)$

Explanation:

$7 x + 3 = 4 x - 18$ $7x+3=4x-18$

Subtracting $4 x$ $4x$ from both sides,
$3 x + 3 = - 18$ $3x+3=-18$

Subtracting $3$ $3$ from both sides,
$3 x = (- 18 - 3)$ $3x=(-18-3)$
$3 x = - 21$ $3x=-21$

Dividing both sides by $3$ $3$ ,
$x = - 7$ $x=-7$

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