How do you evaluate $30 a - 8 \cdot 3 + 4$ $30a - 8*3 + 4$ for a = 4.6?

Question

1730 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-06-24T12:27:36

$118$ $color(green)(118$

Substituting $a = 4.6$ $a=4.6$ in the expression gives us:

$30 \cdot 4.6 - 8 \cdot 3 + 4$ $30*4.6 -8*3 + 4$

Using the PEMDAS rule, we multiply first, and then add/subtract

$= 138 - 24 + 4$ $= 138 - 24 + 4$

$= 114 + 4$ $= 114+4$

$= 118$ $=color(green)(118$

How do you evaluate 30a−8⋅3+430a - 8*3 + 4 for a = 4.6?