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Find the solution of the system of equations.

{:[4x-8y=16],[8x-9y=39]:}
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Find the solution of the system of equations.\newline4x8y=168x9y=39 \begin{array}{l} 4 x-8 y=16 \\ 8 x-9 y=39 \end{array} \newlineSubmit Answer

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Q. Find the solution of the system of equations.\newline4x8y=168x9y=39 \begin{array}{l} 4 x-8 y=16 \\ 8 x-9 y=39 \end{array} \newlineSubmit Answer
  1. Simplify Equation: Simplify the first equation if possible.\newlineThe first equation is 4x8y=164x - 8y = 16. We can simplify this by dividing every term by 44 to reduce the coefficients.\newline4x48y4=164\frac{4x}{4} - \frac{8y}{4} = \frac{16}{4}\newlinex2y=4x - 2y = 4
  2. Express xx in Terms: Use the simplified first equation to express xx in terms of yy. From the simplified equation x2y=4x - 2y = 4, we can solve for xx: x=2y+4x = 2y + 4
  3. Substitute xx in Equation: Substitute the expression for xx into the second equation.\newlineThe second equation is 8x9y=398x - 9y = 39. We substitute x=2y+4x = 2y + 4 into this equation:\newline8(2y+4)9y=398(2y + 4) - 9y = 39
  4. Combine Like Terms: Distribute and combine like terms in the second equation.\newline16y+329y=3916y + 32 - 9y = 39\newline(16y9y)+32=39(16y - 9y) + 32 = 39\newline7y+32=397y + 32 = 39
  5. Solve for y: Solve for y.\newlineSubtract 3232 from both sides of the equation:\newline7y=39327y = 39 - 32\newline7y=77y = 7\newlineDivide both sides by 77:\newliney=77y = \frac{7}{7}\newliney=1y = 1
  6. Substitute yy in xx: Substitute the value of yy back into the expression for xx. We have x=2y+4x = 2y + 4, and we found that y=1y = 1. x=2(1)+4x = 2(1) + 4 x=2+4x = 2 + 4 x=6x = 6
  7. Check Solution: Check the solution by substituting xx and yy into both original equations.\newlineFirst equation: 4x8y=164x - 8y = 16\newline4(6)8(1)=164(6) - 8(1) = 16\newline248=1624 - 8 = 16\newline16=1616 = 16 (True)\newlineSecond equation: 8x9y=398x - 9y = 39\newline8(6)9(1)=398(6) - 9(1) = 39\newline489=3948 - 9 = 39\newline39=3939 = 39 (True)