4) Solve for x: 4(2x - 10) = 12x + 10

Mathematics

2 answers:

Lera25 [3.4K]3 years ago

8 0

Answer:

x=-25/2

Step-by-step explanation:

ipn [44]3 years ago

4 0

<h3>Answer:</h3>

$x = - \frac{25}{2}$

Alternative forms:

$x = - 12 \frac{1}{2}, \: or \: x = - 12.5$

<h3>Step-by-step explanation:</h3>

$4(2x - 10) = 12x + 10 \\ first \: you \: need \: to \: distribute \\ \\ 8x - 40 = 12x + 10 \\ subtract \: 12x \: from \: both \: sides \\ \\ - 4x - 40 = 10 \\ add \: 40 \: from \: both \: sides \\ \\ - 4x = 50 \\ divide \: both \: sides \: by \: - 4 \\ \\ x = - \frac{25}{2}$

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