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10. Solve using substitution: \( \quad y=4 x+2 \quad 6 x-y=10 \) \[ y=4(6 x-2=10)+2 \]

Ask by Morgan Wheeler. in the United States
Jan 24,2025

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Answer

The solution is \( x = 6 \) and \( y = 26 \).

Solution

To solve the system of equations using the **substitution method**, follow these steps: \[ \begin{cases} y = 4x + 2 \quad \text{(Equation 1)} \\ 6x - y = 10 \quad \text{(Equation 2)} \end{cases} \] ### Step 1: Solve one equation for one variable Equation 1 is already solved for \( y \): \[ y = 4x + 2 \] ### Step 2: Substitute the expression from Step 1 into the other equation Substitute \( y = 4x + 2 \) into Equation 2: \[ 6x - (4x + 2) = 10 \] ### Step 3: Simplify and solve for \( x \) \[ 6x - 4x - 2 = 10 \\ 2x - 2 = 10 \\ 2x = 10 + 2 \\ 2x = 12 \\ x = \frac{12}{2} \\ x = 6 \] ### Step 4: Substitute the value of \( x \) back into one of the original equations to find \( y \) Using Equation 1: \[ y = 4x + 2 \\ y = 4(6) + 2 \\ y = 24 + 2 \\ y = 26 \] ### Solution \[ x = 6 \\ y = 26 \] **Therefore, the solution to the system is \( x = 6 \) and \( y = 26 \).**

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Let's unravel this puzzle! To solve the equations using substitution, first, we have \( y = 4x + 2 \). Now, substitute \( y \) in the second equation \( 6x - y = 10 \): \[ 6x - (4x + 2) = 10 \] This simplifies to: \[ 6x - 4x - 2 = 10 \] Now combine like terms: \[ 2x - 2 = 10 \] Add 2 to both sides: \[ 2x = 12 \] Dividing by 2 gives us: \[ x = 6 \] Next, plug \( x \) back into the first equation to find \( y \): \[ y = 4(6) + 2 = 24 + 2 = 26 \] So, the solution is \( x = 6 \) and \( y = 26 \). Now that’s how you solve for \( x \) and \( y \) without turning it into an algebraic soap opera!

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