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[Home](./index.md) &gt; [rc-js-util](./rc-js-util.md) &gt; [Margin2d](./rc-js-util.margin2d.md) &gt; [sumX](./rc-js-util.margin2d.sumx.md)

## Margin2d.sumX() method

**Signature:**

```typescript
sumX(): number;
```
**Returns:**

number