Answer:
x is 4
GR is 10
GB is 49
Step-by-step explanation:
If U is between G and B, then GU + UB = GB .... 1
If R is between G and U, GR + RU = GU ....2
Given
GR is 3x-2
RU is 5x+7
UB is 12
GB is 15x-11
Substitute2 into 1;
Frim 1;
GU + UB = GB
(GR+RU) + UB = GB
3x-2+5x+7+12 = 15x-11
8x+17 = 15x-11
8x-15x = -11-17
-7x = -28
x = 28/7
x = 4
Get GR:
GR = 3x-2
GR = 3(4)-2
GR = 12-2
GR = 10
Get GB:
GB = 15x-11
GB = 15(4)-11
GB = 60-11
GB = 49
