5x-10=45
+10 +10
--------------------
55
_____
5
x=11
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There is no numerical value for 'x' that can make this a true statement.
x = 45
There are infinitely many solutions as x + y = 45 defines a straight line. Pick a value for x and you can calculate the y value so that x + y = 45. It can be rearranged to get y in terms of x: x + y = 45 → -x + x + y = -x + 45 → y = -x + 45 It is a line with slope -1 and intercept 45. You can substitute any value for x and the corresponding y value will be found. eg x = 1 → y = -1 + 45 = 44 x = 25 → y = -25 + 25 = 20
X-45=12 ________ +45 +45 ________ x= 57
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