(3*5)t+(21-12)=15+3^2

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Solution for (3*5)t+(21-12)=15+3^2 equation: 



(3*5)t+(21-12)=15+3^2

We move all terms to the left:

(3*5)t+(21-12)-(15+3^2)=0

We add all the numbers together, and all the variables

15t+9-(15+3^2)=0

We add all the numbers together, and all the variables

15t-15=0

We move all terms containing t to the left, all other terms to the right

15t=15

t=15/15

t=1

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