Which of these is a good conductor? wood silver paper air
2 answers:
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Answer:
= 12
Step-by-step explanation:
{ 3 × - 3 } -3 × 4
Solve the brackets first
{3 × 9 - 3 } -3 × 4
{ 27 -3 } -3 × 4
24 - 3 × 4
24 - 12
= 12