The value of t is -4
The question given is 3.5(t+6)=7. For you to solve the question, you've to open the bracket first. This goes thus:
3.5(t+6)=7
3.5t + 21 = 7
Collect like terms
3.5t = 7 - 21
3.5t = -14
Divide both side by 3.5
3.5t/3.5 = -14/3.5
t = -4
Therefore, the value of t will be -4.
In conclusion, the correct option is A.
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