Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Find the solution of the system of equations.

{:[8x+2y=-2],[4x-5y=-19]:}

Find the solution of the system of equations.\newline8x+2y=24x5y=19 \begin{array}{l} 8 x+2 y=-2 \\ 4 x-5 y=-19 \end{array}

Full solution

Q. Find the solution of the system of equations.\newline8x+2y=24x5y=19 \begin{array}{l} 8 x+2 y=-2 \\ 4 x-5 y=-19 \end{array}
  1. Write Equations: Write down the system of equations to be solved.\newlineWe have the following system of equations:\newline8x+2y=28x + 2y = -2\newline4x5y=194x - 5y = -19\newlineOur goal is to find the values of xx and yy that satisfy both equations simultaneously.
  2. Multiply Second Equation: Multiply the second equation by 22 to make the coefficient of xx in both equations the same.\newlineMultiplying the second equation by 22 gives us:\newline2×(4x5y)=2×(19)2 \times (4x - 5y) = 2 \times (-19)\newlineWhich simplifies to:\newline8x10y=388x - 10y = -38
  3. Eliminate x: Subtract the new equation from the first equation to eliminate x.\newline(8x+2y)(8x10y)=2(38)(8x + 2y) - (8x - 10y) = -2 - (-38)\newlineThis simplifies to:\newline8x+2y8x+10y=2+388x + 2y - 8x + 10y = -2 + 38\newlineWhich further simplifies to:\newline12y=3612y = 36
  4. Solve for y: Solve for y.\newlineDivide both sides of the equation by 1212 to isolate y:\newline12y12=3612\frac{12y}{12} = \frac{36}{12}\newliney=3y = 3
  5. Substitute and Solve for xx: Substitute y=3y = 3 into one of the original equations to solve for xx. We can use the second original equation for this purpose: 4x5y=194x - 5y = -19 Substitute yy with 33: 4x5(3)=194x - 5(3) = -19 Which simplifies to: 4x15=194x - 15 = -19
  6. Substitute and Solve for x: Substitute y=3y = 3 into one of the original equations to solve for xx. We can use the second original equation for this purpose: 4x5y=194x - 5y = -19 Substitute yy with 33: 4x5(3)=194x - 5(3) = -19 Which simplifies to: 4x15=194x - 15 = -19 Solve for xx. Add 1515 to both sides of the equation to isolate the term with xx: xx00 Which simplifies to: xx11 Now, divide both sides by xx22 to solve for xx: xx44 xx55