Distribute and Simplify: Distribute the 4 across the terms inside the parentheses.We need to apply the distributive property, which states that a(b+c)=ab+ac. In this case, we have 4(d+2), which becomes 4d+4×2.Calculation: 4d+8
Set Up Equation: Set up the equation after distribution.After distributing the 4, our equation is now 4d+8=12.
Subtract to Isolate: Subtract 8 from both sides of the equation to isolate the term with d. We want to get d by itself on one side of the equation, so we need to remove the 8 from the left side. To do this, we subtract 8 from both sides. Calculation: 4d+8−8=12−8, which simplifies to 4d=4.
Divide to Solve: Divide both sides of the equation by 4 to solve for d. Now that we have 4d=4, we can divide both sides by 4 to find the value of d. Calculation: 44d=44, which simplifies to d=1.
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