Answer:
a) x = 4 cm
Step-by-step explanation:
x + 2x + 2x = 20 cm
5x = 20
x = 4 cm
Answer:Second Step
Step-by-step explanation:
On the right side in step two you added -3b-15b, and ended up with -12b. This is incorrect. -3b-15b is actually -18b
11-3 = 8
8y = 24
8y/8 = 24/8
y = 3
X+9 ? I'm not sure if that was the kind of answer you were looking for but that's what I got out of that.
