Answer :

Let's solve the equation [tex]\( 315 = 216 + t \)[/tex].

1. Start with the original equation:
[tex]\[ 315 = 216 + t \][/tex]

2. To isolate [tex]\( t \)[/tex], we need to get rid of the [tex]\( 216 \)[/tex] on the right-hand side. To do so, subtract [tex]\( 216 \)[/tex] from both sides of the equation:
[tex]\[ 315 - 216 = 216 + t - 216 \][/tex]

3. Simplify both sides:
[tex]\[ 315 - 216 = t \][/tex]

4. Performing the subtraction gives:
[tex]\[ 99 = t \][/tex]

Thus, [tex]\( t = 99 \)[/tex].

So the solution to the equation [tex]\( 315 = 216 + t \)[/tex] is [tex]\( t = 99 \)[/tex].