Once you have simplified the equation, use reverse BIDMAS (also called SAMDIB)

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Reverse BIDMAS (SAMDIB)
Once you have simplified the equation, use reverse
BIDMAS (also called SAMDIB).
To do this we do the reciprocal (opposite) of each
operation.
A Example:
S
1. Choose the word whose underlined part is pronounced differently from that of the
others
energetic
rehearse
prchestra
relax
assignment
environment
Choose the word that has a different stress pattern from that of the others
nvite
empty
pretty
D. pollution
vacation
Mmtiple choice
Solving with 2 Variables EMGEdue
Sometimes equations have two variables. Follow these
steps to solve:
• Step 1: Replace the known
If z = 6, solve for r:
5z + 7r = 79
variable with its value.
• Step 2: Use BIDMAS to simplify
all terms on the variable side of
(5 x 6) + 7r = 79
the equation.
• Step 3: Use SAMDIB and
reciprocals to move all non-
30 + 7r = 79
variable numbers to the other side
of the equal sign.