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directions: solve each equation. 1. $3x + 5 = 2x - 10$ 2. $4(x - 2) + 3…

Question

directions: solve each equation.

  1. $3x + 5 = 2x - 10$
  2. $4(x - 2) + 3 = 3(x + 4)$
  3. $5(2y + 3) = 6y - (7 - 2y)$
  4. $7 - 2z = 3z + 4(5 - z)$
  5. $2(3x + 7) + x = 4x + 8$
  6. $6(1 - 2m) - 3m = 2(4m + 5)$
  7. $5(n + 2) - 2n = 3(2n - 1) + 7$
  8. $4(2p - 3) = 2p + 6 - (p - 7)$
  9. $3(q - 4) + 2q = q - 8 + 6(q + 2)$
  10. $5(1 + 2r) - 3(2r - 7) = 2$
  11. $7s + 2(3 - 2s) = 3(1 + s) + 14$

Explanation:

Problem 1: \( 3x + 5 = 2x - 10 \)

Step 1: Subtract \( 2x \) from both sides

To isolate the variable terms on one side, we subtract \( 2x \) from both sides of the equation. This gives us \( 3x - 2x + 5 = 2x - 2x - 10 \), which simplifies to \( x + 5 = -10 \).

Step 2: Subtract 5 from both sides

Next, we subtract 5 from both sides to solve for \( x \). So, \( x + 5 - 5 = -10 - 5 \), which simplifies to \( x = -15 \).

Step 1: Distribute the coefficients

First, we distribute the 4 on the left side and the 3 on the right side. This gives us \( 4x - 8 + 3 = 3x + 12 \).

Step 2: Simplify both sides

Simplify the left side by combining like terms: \( 4x - 5 = 3x + 12 \).

Step 3: Subtract \( 3x \) from both sides

Subtract \( 3x \) from both sides to get \( 4x - 3x - 5 = 3x - 3x + 12 \), which simplifies to \( x - 5 = 12 \).

Step 4: Add 5 to both sides

Add 5 to both sides: \( x - 5 + 5 = 12 + 5 \), so \( x = 17 \).

Step 1: Distribute and simplify the right side

First, distribute the 5 on the left side: \( 10y + 15 \). On the right side, simplify the expression inside the parentheses and the negative sign: \( 6y - 7 + 2y = 8y - 7 \). So the equation becomes \( 10y + 15 = 8y - 7 \).

Step 2: Subtract \( 8y \) from both sides

Subtract \( 8y \) from both sides: \( 10y - 8y + 15 = 8y - 8y - 7 \), which simplifies to \( 2y + 15 = -7 \).

Step 3: Subtract 15 from both sides

Subtract 15 from both sides: \( 2y + 15 - 15 = -7 - 15 \), so \( 2y = -22 \).

Step 4: Divide by 2

Divide both sides by 2: \( \frac{2y}{2} = \frac{-22}{2} \), which gives \( y = -11 \).

Answer:

\( x = -15 \)

Problem 2: \( 4(x - 2) + 3 = 3(x + 4) \)