[(x+52.8)×5-3.9343]÷0.5-10x 等于多少?

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[(x+52.8)×5-3.9343]÷0.5-10x 等于多少?

[(x+52.8)×5-3.9343]÷0.5-10x 等于多少?
[(x+52.8)×5-3.9343]÷0.5-10x 等于多少?

[(x+52.8)×5-3.9343]÷0.5-10x 等于多少?
[(x+52.8)×5-3.9343]÷0.5-10x
=[(x+52.8)×5-3.9343]×2-10x
=(x+52.8)×10-3.9343×2-10x
=10x+52.8×10-7.8686-10x
=528-7.8686
=520.1314