Question

① -10x + 6 = 74
② \\(\frac{x}{2} - 4 = 0\\)
③ 3 + 5x = -47
④ 3 + 15x = -150

Explanation:

Step1: Isolate term with $x$

$-10x = 74 - 6$
$-10x = 68$

Step2: Solve for $x$

$x = \frac{68}{-10}$
$x = -6.8$

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Step1: Isolate term with $x$

$\frac{x}{2} = 0 + 4$
$\frac{x}{2} = 4$

Step2: Solve for $x$

$x = 4 \times 2$
$x = 8$

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Step1: Isolate term with $x$

$5x = -47 - 3$
$5x = -50$

Step2: Solve for $x$

$x = \frac{-50}{5}$
$x = -10$

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Step1: Isolate term with $x$

$15x = -150 - 3$
$15x = -153$

Step2: Solve for $x$

$x = \frac{-153}{15}$
$x = -10.2$

Answer:

1. $x = -6.8$
2. $x = 8$
3. $x = -10$
4. $x = -10.2$