Morgan solved the following equation. equation: 22 - 4) + 2x = x + 7
2x – 8 + 2x = x +7
line 1:
line 2:
4x – 8 = x +7
line 3:
3x – 8 = 7
line 4:
3x = 15
line 5:
x = 5
Which step is justified by the addition property of equality?

A. From the equation to line1
B. From line 1 to line 2
C. From line 3 to line 4
D. From line 4 to line 5

a precentage of 6th graders. the population is all 6th graders. let me know if i'm wrong, i hope this ! : )

step-by-step explanation:

you are playing an adventure game on your computer. you come across a troll who won't let you pass and there is no other way to get to the other side of the river except over the bridge he is guarding.

the troll is a nerd. he takes great delight in watching people struggle with his problems. very few get them. he only gives you one chance and then he changes the puzzle. you have to solve this one.

before you are four blocks. they are numbered 11,6, -7,21.

he tells that the answer he wants is minus and between -1 and - 2. you can use +, -, ×, ÷   ( and ) as many times as you like or no times at all. you don't like the way he's looking at you, but you need to cross the bridge. what do you do?