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khynia11
21.12.2020 •
Mathematics
Solve the following system of linear equations using the elimination method. 3m-n=-10
2m +n=-5
m = -2, n =4
m = -3, n=1
m=-3, n = -1
m = -4, n = -2
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Ответ:
m = -3, n = 1
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Algebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
3m - n = -10
2m + n = -5
Step 2: Solve for m
Elimination
Combine equations: 5m = -15Divide 5 on both sides: m = -3Step 3: Solve for n
Define equation: 3m - n = -10Substitute in m: 3(-3) - n = -10Multiply: -9 - n = -10Add 9 to both sides: -n = -1Divide -1 on both sides: n = 1Ответ: