4(x+7) becomes 4x+28 you multipli the 4 in parentheses ans 2(x+7) becomes 2x+14
4x+28=2x+14 you move the x termes to the left and other numbers to the right look:
4x-2x=14-28 when you change the sides always change the sign +or-
2x=-14
2x/2=-14/2
X=-7
B. All sides are equal and each side is at a 60 degree angle.
Answer:
n≥15
Step-by-step explanation:
3n≥45
/3 /3
n≥15
When there are one positive and one negative
