6(2 + t) - 2(t + 1)
...multiply 6
12 + 6t - 2(t + 1)
...multiply 2
12 + 6t - 2t - 2
...simplify
10 + 4t
6(2+t)−2(t+1)
=(6)(2)+(6)(t)+(−2)(t)+(−2)(1)
=12+6t+−2t+−2
=(6t+−2t)+(12+−2)
=4t+10
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