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{:[x=2],[5x+9=5+3x]:}

x=25x+9=5+3x \begin{array}{l}x=2 \\ 5 x+9=5+3 x\end{array}

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Full solution

Q. x=25x+9=5+3x \begin{array}{l}x=2 \\ 5 x+9=5+3 x\end{array}
  1. Write Down Knowns: First, let's write down what we know:\newlineTotal tape needed = 8,0008,000 cm\newlineTape per roll = 2,0002,000 cm
  2. Calculate Number of Rolls: Now, we divide the total tape needed by the tape per roll to find the number of rolls: 8,000 cm÷2,000 cm=48,000 \, \text{cm} \div 2,000 \, \text{cm} = 4 rolls
  3. Solve First Equation: First, let's solve the first equation: x=2x = 2
  4. Substitute and Simplify: Now, let's substitute x=2x = 2 into the second equation: 5(2)+9=5+3(2)5(2) + 9 = 5 + 3(2)
  5. Add Numbers: Simplify both sides:\newline10+9=5+610 + 9 = 5 + 6
  6. Add Numbers: Simplify both sides:\newline10+9=5+610 + 9 = 5 + 6Add up the numbers:\newline19=1119 = 11

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