# solve() simple equ, something is missing ?

HI

Sagemath 9.1 notebook ,OS :Ubuntu 18.04

what should i add or precise, so that SageMath solve this equation ?:

```
assume(x,'real')
solve (sqrt(-x^2 + 1)==-4/3*x - 25/36,x)
```

output :[x == -3/4*sqrt(-x^2 + 1) - 25/48] ?