Answer:
Step-by-step explanation:
7−2n / 7+2n = 1
/18
Step 1: Cross-multiply.
You then get
−36n + 126 = 2n + 7
Step 2: Subtract 2n from both sides.
−36n + 126 = 2n+7
−2n −2n
−38n + 126 = 7
Step 3: Subtract 126 from both sides.
−38n + 126 = 7
−126 −126
−38n= −119
Step 4: Divide both sides by -38.
−38n
/−38 = −119
/−38
n = 119
/38
Answer:
n=
119 / 38
