11x+9
Step by step:
Remove the parenthesis
3x+7+8x+2
Collect like terms
11x+7+2
Add 7+2
11x+9
Answer:
With the increase of the value of a ,the value of the expression 20+a will also increase.
Step-by-step explanation:
Answer:
90°
Step-by-step explanation:
as a straight line is 180°
and the angle 4 is 90 degrees it must mean that the other side is 90 degrees too
Answer:
2x+8x=x-16?
10x=x-16
9x=-16
x=-16/9?
Step-by-step explanation: