SOLUTION: 1-7x = -5/2

Algebra ->  Equations -> SOLUTION: 1-7x = -5/2      Log On


   



Question 238074: 1-7x = -5/2
Answer by College Student(505) About Me  (Show Source):
You can put this solution on YOUR website!
Steps:
a. we need to find x, so you first move 1 to the right sidde of eqn
b. convert 1 into a fractio that can be combined with the fraction next to it
c. divide b y -7 on both sides of equation to find the value of x
.
Problem:
1-7x=-%285%2F2%29
-7x=-%285%2F2%29-1
Sinced any number divided by itself equals 1, let's go for 2/2...
-7x=-%285%2F2%29-%282%2F2%29
-7x=-%287%2F2%29
x=-%287%2F2%29%2F-7 ...same as multiplying by reciprocal... x=-%287%2F2%29%2A%28-1%2F7%29
-7 cancels itself, so you're left with:
x=1%2F2