Step-by-step explanation:
3(x+3)=12
3x+9=12
3x=12-9
3x=3
x=1
Answer:a
a
Answer:
5
5 + d > 5 - d
5 + d + d > 5
5 + 2d > 5
2d > 5 - 5
2d > 0
d > 0 ÷ 2
d > 0