how to do the simple equestion
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· First, write down the expression:
· 2a + 3 = 7.
· Then, undo the + 3 by subtracting 3. Remember, you need to do it to BOTH sides!
· 2a + 3 - 3 = 7 - 3,
· so 2a = 4.
· Undo the multiply by 2 by dividing by 2, again on both sides:
· 2a ÷ 2 = 4 ÷ 2.BBC - Standard Grade Bitesize
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