2 answers:
6+18r=20r-18-4r
6+18r=18r-18
-6. -6
18r=18r-24
-18r. -18r
R=-24
Answer:
r = -12
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
Step-by-step explanation:
<u>Step 1: Define</u>
6 + 18r = 20r - 18 - 4r
<u>Step 2: Solve for </u><em><u>r</u></em>
- Combine like terms: 18r + 6 = 16r - 18
- Subtract 16r on both sides: 2r + 6 = -18
- Isolate <em>r</em> term: 2r = -24
- Isolate <em>r</em>: r = -12
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<span>49b^6 = 7b^5(7b)
</span><span>28b^5 = 7b^5(4)
so
</span><span>greatest common factors for 49b^6 and 28b^5 = 7b^5</span>