Please help me its about solving system by substitution
1 answer:
Answer:
(-3, 4)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
Equality Properties
Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtract Property of Equality
<u>Algebra I</u>
Terms/Coefficients Solving systems of equations using substitution/elimination Step-by-step explanation:
<u>Step 1: Define Systems</u>
y = -x + 1
2x + 3y = 6
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Substitution</em>
Substitute in <em>y</em>: 2x + 3(-x + 1) = 6 Distribute 3: 2x - 3x + 3 = 6 Combine like terms: -x + 3 = 6 Isolate <em>x</em> terms: -x = 3 Isolate <em>x</em>: x = -3
<u>Step 3: Solve for </u><em><u>y</u></em>
Define equation: y = -x + 1 Substitute in <em>x</em>: y = -(-3) + 1 Simplify: y = 3 + 1 Add: y = 4
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Answer:
15°
Step-by-step explanation:
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Answer:
180 = 90 + 52+ a
38 =a
Step-by-step explanation:
The sum of the angles of a triangle add to 180 degrees
180 = 90 + 52+ a
Combine like terms
180 = 142+a
Subtract 142 from each side
180 -142 = 142+ a -142
38 = a
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Answer:
c
Step-by-step explanation:
c