Answer:
I think it's B
Step-by-step explanation:
A) x=7, you divide both sides by -3 to get x by itself.
b) x=4, you add 7x to both sides to get all the x on one side, you then add 20 to both sides to get all constants on both sides. lastly, you divide by 9 to get x by itself.
Answer:
x=-2
Step-by-step explanation:
distribute on both sides
3x+6=4-2x
subtract 2x
5x+6=4
Subtract 6
5x=-10
divide 5 from the x
x=-2
Answer:
c, summing up. not the others
Answer:
y= -4
Step-by-step explanation: