Question

7 - 3 ( 5t - 10 ) = 67

Answer 1

Answer in an annex
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Answer 2

`7-3(5t-10)=67`


`7-(3*5t-3*10)=67`


`7-15t-(-30)=67`


`7-15t+30=67`


`-15t=67-30-7`


`-15t=30`

then...


`t=-(30)/(15)`


`\boxed{\boxed{t=-2}}`