I wrote out the following guide to help my older kids solve simple algebraic word problems.
Algebra Word
Problem Getting Started Quick Guide
After reading the problem all the way through:
1. 1. Set your variable to be what you are looking for (what you are
asked to solve for in some cases ). (WRITE IT OUT)
a. Example: The question asks you to find the number of red marbles
so you write:
x = number of red marbles
2. 2. Write your equation
a. Look for keywords
The following words

may
signal or signals

is,
was, are, will be, yields, sold for

=

increased
by, more than, combined, together, total of, sum, added to

addition

decreased
by, minus, less, difference between/of, less than, fewer than

subtraction

of,
times, multiplied by
product of, increased/decreased by a
factor of

multiplication

per,
a, out of, ratio of, quotient of
percent (divide by 100)

division

Some
words taken from www.purplemath.com
b. Take phrases at a time and write down what they translate into
3. 3. Simplify/collect like terms
4. 4. Solve for your variable (get it by itself)
5. 5. CHECK YOUR WORK
a. Plug your answer back into the original equation, if the sides
are equal, then the solution is correct, insha Allah.
Purple Math.com has tips on solving algebra word problems