First Degree Equations

First Degree Equations

Karol Esther Montenegro. Ana Lucia Chavéz. Abril Velázquez. Karol Daniela Pérez.

#03

Methods to solve

What is?

First Degree Equations with 1 uknown

We will talk about:

First Degree Equations with 2 uknows

What is?

First Degree Equations

First Degree Equations is...

An equation from a first grade unknown with one or more unknowns is a math equality. Those are first grade equations because their variables are raised to the first power. have just one solution.

First Degree Equations

with 1 uknown

How to solve it: 4x+3=21-2x

Group terms (with x in the first part and in the second the ones don't have it). 4x+2x=21-3 If a term passes to the other side of the equality changes the sign. Perform the corresponding operations. 6x=18 Clear x changing the term next the x to the other side of the education with contrary operation. x=18/5 Solve the equation with x value. x=3

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Solve the following equation:

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Solve the following equation:

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clientes

9,280

17,520

17,520

First degree equations

two unknown

How to solve it:

1. It clears an unknown in one of the equations. 2. It replaced the expression from this unknown in the other one getting an equation with just one unknown. 3. Solve the equation. 4. The obtained value is replaced in the equation where the cleared unknown appeared. 5. Both obtained values constitute the system ones.

Methods to solve

Elimination

1. Define the variables 2. Form an equivalent system of equations where the coefficients of one variable are opposite to each other. 3. Eliminate adding or subtracting the equations term by term to put it with just one variable. 4. Solve the equation. 5. Substitute the value into one of the two initial equations to find the value of the second variable. 6. Substitute the values to verify the answer.

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Equalization Method

1. Use the same variable in both equations. 2. We equal the values. 3. Solve the equation. 4. To find the value of the other variable, we will use the first one and substituting.

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Substitution Method

Solve one of the equations with one of the variables, then we will use this to solve the other one, substituting it to solve the same equation and solving the other.

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Solve the following equation using the elimination method:

CONCIENCIA

clientes

9,280

17,520

17,520

Siguiente

Solve the following equation with the equalization method:

CONCIENCIA

clientes

9,280

17,520

17,520