Algebra
posted by anon
There are 4 problems that I don't understand how to solve so, please help me. A numerical explanation with words explanation would be nice. Thank you tutors.
Rewrite each equation so it is in the form ax + b = c or x + d/e = f, where x is a variable. Then solve the equation.
1. 6 + 5x  1/3 = 10
2. 7 + 3  4x/5 = 0
In each equation, one of the letters represents a variable and the other letters represent constants. Solve for the indicated variable and describe what operations you performed to solve for the variable.
3. Solve rs + t = u for the variable s.
4. Solve n + m/p = q for the variable n.

Damon
1.
5 x  1/3 = 4
2.
(4/5) x  3 = 7
3.
r s = u  t
s = (ut)/r
4.
n = q  m/p 
anon
Thank you tutor Damon. I still don't understand, for the equation you gave me for #2, I got x = 12.5 and when I check it, 3  50 = 47/5 = 9.4 + 7 = 2.4 and not 0. For #3 and 4, I still don't understand how to solve it.

Damon
2.
(4/5) x = 10
4 x = 50
x = 12.5

check
10  (4/5)12.5
10  50/5
10  10
0 yes
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