Answer:
1) x=4-y-z
2) x=-12+4y-4z/3
3) x=-1+y+4z/2
Step-by-step explanation:
1) Subtract y+z from both sides.
x+y+z-(y+z)=4-(y+z)
Simplify
x=4-y-z
2) Subtract -4y+4z from both sides.
-4y+4z-(-4y+4z)=12-(-4y+4z)
Simplify
-3x=12+4y-4z
Divide both sides by -3
-3x/-3=12/-3+4y/-3-4z/-3
x=-12+4y-4z/3
3) Subtract -y-4z from both sides.
2x-y-4z-(-y-4z)=-1-(-y-4z)
Simplify
2x=-1+y+4z
Divide both sides by 2
2x/2=-1/2+y/2+4z/2
Simplify
x=-1+y+4z/2
Hope this helps! Pls give brainliest!
Answer:
I think this is a high school problem in in 5th grade TnT
Answer:
- Sara is 10 and Laila is 8
Step-by-step explanation:
- Sara's age = s
- Laila's age = l
<u>The ratios:</u>
- (s + 2)/(l + 2) = 6/5 ⇒ 5(s + 2) = 6(l + 2) ⇒ 5s = 6l + 2
<u>Substitute s into the second equation and solve for l:</u>
- 5(5l/4) = 6l + 2
- 25l = 24l + 8
- l = 8
<u>Fins s:</u>
Options A, B and D are true.
They’re all -4 ,, what exactly are you asking ?