Question

Please help i really don’t understand ( ignore the math on top )

Answer 1

Answer: x=2 DS=10 SE=10 DE=20

Explanation:

`7x-4=16-3x\\7x-4+3x=16-3x+3x\\10x-6=16\\10x-4+4=16+4\\10x=20\\`

Divide the equation by 10:

`x=2`

Hence,

`DS=(7)(2)-4\\DS=14-4\\DS=SE=10\\DE=DS+SE\\DE=10+10\\DE=20`