Answer:
x=7
Step-by-step explanation:
1. Distribute
2. Subtract 7x from both sides of the equation
3. Simplify
4. Divide both sides of the equation by the same term
5. Simplify
Answer: x=7
Answer:
The equations should have been added up to equal 180 instead of being set to equal each other. The two are supplementary angles, which can be seen due the rule that a pair of interior angles on the same side of the transversal is supplementary. To fix this issue from the work that they did, they should subtract the 140 from 180, so the correct measure of DKH is actually 40 degrees.
Step-by-step explanation:
Multiply both sides by 2
(2) 18 = x/2 (2)
the /2 (2) gets canceled out
so it's 36= x
Hope this helps
Answer:
All three chose a valid first step toward solving the equation.
All approaches are algebraically correct
