4−(3x−8)=21 solve this pls
1 answer:
Answer:
4 - ( 3x - 8 ) = 21
break the bracket first ,it gives : 4 - 3x + 8 = 21
12 - 3x = 21
- 3x = 21 - 12
- 3x = 9
-x = 9/3
-x = 3
X = - 3
[ check if the answer is correct, put -3 instead of X in the above equation ! we get 4 - { 3(-3) - 8 } = 21
4 - { - 9 - 8 } = 21
4 - { - 17 } = 21
break the bracket, minus and minus will multiply and will become plus , so we have 4 + 17 = 21 , hence 21 = 21 ! therefore X = -3
You might be interested in
Answer:
true
Step-by-step explanation:
Answer:
p
Step-by-step explanation:
Answer:
corresponding angles
Step-by-step explanation:
<4 and <8 are corresponding angles
Corresponding angles are in matching corners on parallel lines
The slope is either 5/2 or 2/5 and the y intercept is 3
Yes. Then the formula of the resultant water will be: 4H₂O
That, means four molecules of water.
