+22 Simplify the following expression
4x - 3y + 2z - 3x - y + 3z = ?
Measurement is given as length by width by height.
x - 4y + 5z
-4y + 5z
7x - 4y + 5z
x - 4y + 6z
+118680 4x - 3y + 2z - 3x - y + 3z = ?
When you add and subtract with algebra you can think of the pronumerals as things.
You can only add and subtract like terms - this means the 'things' must be the same.
so you can think of this problems as
4 xylophones - 3 yaks + 2 zebras - 3 xylophones - a yaks + 3 zebras
=4 xylophones - 3 xylophones - 1 yaks - 3 yaks + 3 zebras + 2 zebras
=1 xylophones - 4 yaks + 5 zebras
=1x-4y+5z
=x-4y+5z (1 xylophone is the same as a xylophone - you don't need the 1 it can be invisable)
+4473 4x - 3y + 2z - 3x - y + 3z = ?
4x - 3x - 3y - y +2z + 3z =
x - 4y + 5z.
+118680 4x - 3y + 2z - 3x - y + 3z = ?
When you add and subtract with algebra you can think of the pronumerals as things.
You can only add and subtract like terms - this means the 'things' must be the same.
so you can think of this problems as
4 xylophones - 3 yaks + 2 zebras - 3 xylophones - a yaks + 3 zebras
=4 xylophones - 3 xylophones - 1 yaks - 3 yaks + 3 zebras + 2 zebras
=1 xylophones - 4 yaks + 5 zebras
=1x-4y+5z
=x-4y+5z (1 xylophone is the same as a xylophone - you don't need the 1 it can be invisable)
