| x | + | 5 | = | 12 |
What we want is an answer like "x = ...",
but the +5 is in the way of that!
We can cancel out the +5 with a −5 (because 5−5=0)
So, let us have a go at subtracting 5 from both sides:x + 5 −5 = 12 −5
A little arithmetic (5−5 = 0 and 12−5 = 7) becomes:x + 0 = 7
Which is just:x = 7
Solved!
No comments:
Post a Comment