b. \( -4 a+8= \)

To solve the equation \( -4a + 8 = 0 \), first, isolate the variable term by subtracting 8 from both sides, which gives you \( -4a = -8 \). Then, divide both sides by -4 to find \( a = 2 \). You have just unlocked the secret of moving variables around like a pro! Now, if you're keen to explore further, check out how equations evolve in different cultures. For instance, ancient Egyptians used clever methods that might surprise you! They didn't have our symbolic notations, but their problem-solving skills were as impressive as a magic show!