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16 Part I: Technical Mathematics
Part I.B
2( 10x
2x)+ 50 = 14
2× 8x
+ 50 = 14
16x
+ 50 50 = 14
50
16x
= 36
16x
÷ 16 = 36÷
16
x = 2 1 .
4
Converting
2 1 4
to
9
4
we can check the solution:
2 10
×
9
9
2 50 14
4
4
+ =
36
2 × + 50 = 14
2
36+ 50 = 14
14 = 14
Solving Inequalities
To solve an inequality, remember that the solution will be a range of values.
In the following example, the equation is true for any value of y equal to or greater
than 24.
7
8
7
8
y + 30 51
y + 3030 5130
8
7
7
8
y 21
7
× y 21×
8
8
7
8
y 21×
7
y 24