(x+5)+(x-5)+2x-2x=270怎么解?

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(x+5)+(x-5)+2x-2x=270怎么解?
(x+5)+(x-5)+2x-2x=270怎么解?

(x+5)+(x-5)+2x-2x=270怎么解?

(x+5)+(x-5)+2x-2x=270
x+5+x-5+2x-2x=270
2x=270
x=270÷2=135