Answer:
![\boxed{ \bold{ \huge{ \boxed{ \sf{x - 9}}}}}](https://img.qammunity.org/2021/formulas/mathematics/high-school/f6x5ilu7visofza4gy3jgwzc1t5tiw8ri1.png)
Explanation:
![\star \: \sf{6( x + 1) - 5(x + 2)}](https://img.qammunity.org/2021/formulas/mathematics/high-school/365wglsy6xena1i74guzxu1wwrh87nja5f.png)
Distribute 6 through the parentheses
Similarly, distribute -5 through the parentheses
![\dashrightarrow{ \sf{6x + 6 - 5x - 10}}](https://img.qammunity.org/2021/formulas/mathematics/high-school/ov84yntzknijbc1dswz6ninv85u4nqeet7.png)
Collect like terms
Like terms are those which have the same base
![\dashrightarrow{ \sf{6x - 5x + 6 - 10}}](https://img.qammunity.org/2021/formulas/mathematics/high-school/u0j9fwc9i2ucl0hr0rn8bhl4r47uo2xwdx.png)
![\dashrightarrow{ \sf{x + 6 - 10}}](https://img.qammunity.org/2021/formulas/mathematics/high-school/alnqnkimar9q575hcnszwicfmsdzdo2cps.png)
The negative and positive integers are always subtracted but posses the sign of the bigger integer
![\dashrightarrow{ \boxed{ \sf{x - 4}}}](https://img.qammunity.org/2021/formulas/mathematics/high-school/4optiawwpup90ersyuvqrsjjaedie2t2iy.png)
Hope I helped!
Best regards! :D