Solve. 8x-(4x+5)=7
8x-1(4x+5)=7
8x-4x-5=7
4x-5+5=7+5
4x=12
x=3.
Is this right?
yes
Spot on.
well done.
Yes, your solution is correct. Let me explain how to solve the equation step by step:
1. Start with the equation: 8x - (4x + 5) = 7.
2. Apply the distributive property by multiplying -1 to the terms inside the parentheses: 8x - 4x - 5 = 7.
3. Combine like terms on the left side of the equation: 4x - 5 = 7.
4. Add 5 to both sides of the equation to isolate the variable: 4x - 5 + 5 = 7 + 5.
5. Simplify: 4x = 12.
6. Divide both sides of the equation by 4 to solve for x: x = 12 / 4.
7. Simplify: x = 3.
Therefore, the solution to the equation 8x - (4x + 5) = 7 is x = 3.