Mathematics, 05.05.2020 02:13 enevjordan

Solve the system of equations
-5X + 4Y = 3
X = 2Y - 15
X=
Y=

Answers: 1

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Answers

Answer from: FlyingUnicorn123

x = 9

y = 12

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Distributive Property

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Algebra I

Terms/CoefficientsSolving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

-5x + 4y = 3

x = 2y - 15

Step 2: Solve for y

Substitution

Substitute in x [1st Equation]: -5(2y - 15) + 4y = 3[Distributive Property] Distribute -5: -10y + 75 + 4y = 3Combine like terms: -6y + 75 = 3[Subtraction Property of Equality] Subtract 75 on both sides: -6y = -72[Division Property of Equality] Divide -6 on both sides: y = 12

Step 3: Solve for x

Substitute in y [2nd Equation]: x = 2(12) - 15Multiply: x = 24 - 15Subtract: x = 9

Answer from: Quest

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

Answer from: Quest

5/20 so 25%

step-by-step explanation:

Plz i only need the last question answerd

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Solve the system of equations
-5X + 4Y = 3
X = 2Y - 15
X=
Y=...

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