Answer:
1
Step-by-step explanation:

just substitute -2 for x
Answer:
x = 4, 3/2
Step-by-step explanation:
Answer:
done on peace of paper
Step-by-step explanation: bro this was so easy how do you not know this
Answer:
so all x's have to be added together.
8x+5x+10x+7x=30x
-2+3=1
1dividedby30=30
x=30
hope this helps