If you have multiple equations with multiple variables, you can either do clever substitutions, or turn it into a matrix on which you can perform linear combinations or multiplications (Gauss elimination)
1 1 1 1
2 1 -1 8
1 -1 1 -5
(note how the above 3 rows represent the 3 equations, just got rid of the variables, plus sign and equals sign)
subtract row1 from row3, that eliminates x and z from row 3.
1 1 1 1
2 1 -1 8
0 -2 0 -6
divide row3 by -2, that will give y a factor of 1
1 1 1 1
2 1 -1 8
0 1 0 3
The last row now says y=3
Answer:
Distributive is the correct answer.
Answer:
$5.10
Step-by-step explanation:
15% of 34
15/100 × 34 = $5.10
Answer:
nice job man
Step-by-step explanation:
keep it up man
Answer:
5 3/10
Step-by-step explanation:
9 7/10 = 97/10
4 2/5 = 4 4/10 = 44/10
97/10 - 44/10 = 53/10
53/10 = 5 3/10
