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2 years ago

15

Okay so I'm working on solving equations

" id="TexFormula1" title=" - 15x + 5 = - 10x + 25" alt=" - 15x + 5 = - 10x + 25" align="absmiddle" class="latex-formula">

1 answer:

Ksenya-84 [330]2 years ago

8 0

Answer:

x = -4

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

-15x + 5 = -10x + 25

<u>Step 2: Solve for </u><em><u>x</u></em>

Add 15x on both sides: 5 = 5x + 25
Subtract 25 on both sides: -20 = 5x
Divide 5 on both sides: -4 = x
Rewrite: x = -4

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By TRIGONOMETRIC IDENTITY:

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Putting this identity here, and taking A = 9 x, B = 5 x, we get

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