15+3x-4+6x= 9x+11 add 6+3 then subtract 15-4
3y-4x+8x-y= 4x+2y add -4+8 then subtract 3-1
5x+8x+10x-3x= 20x Add 10+5+8 to get 23 then subtract 3
use the substitution method
b+7
19+7
Answer: 26
Answer:
I would say the last one. If its wrong then its definitely option 9y/3
Sorry if its wrong :(
