Álgebra Exemplos

$[\begin{array}{c} - 3 & 4 & a \\ 11 & 3 b & 7 \\ 0 & - 3 c & - 2 \end{array}] - [\begin{array}{c} 12 & - 10 & - 3 a \\ 15 & - 2 b & 30 \\ - 7 & 3 c & - 9 \end{array}]$

Etapa 1

Subtraia os elementos correspondentes.

$[\begin{array}{c} - 3 - 12 & 4 + 10 & a + 3 a \\ 11 - 15 & 3 b + 2 b & 7 - 30 \\ 0 + 7 & - 3 c - 3 c & - 2 + 9 \end{array}]$

Etapa 2

Simplifique cada elemento.

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Etapa 2.1

Subtraia $12$ de $- 3$ .

$[\begin{array}{c} - 15 & 4 + 10 & a + 3 a \\ 11 - 15 & 3 b + 2 b & 7 - 30 \\ 0 + 7 & - 3 c - 3 c & - 2 + 9 \end{array}]$

Etapa 2.2

Some $4$ e $10$ .

$[\begin{array}{c} - 15 & 14 & a + 3 a \\ 11 - 15 & 3 b + 2 b & 7 - 30 \\ 0 + 7 & - 3 c - 3 c & - 2 + 9 \end{array}]$

Etapa 2.3

Some $a$ e $3 a$ .

$[\begin{array}{c} - 15 & 14 & 4 a \\ 11 - 15 & 3 b + 2 b & 7 - 30 \\ 0 + 7 & - 3 c - 3 c & - 2 + 9 \end{array}]$

Etapa 2.4

Subtraia $15$ de $11$ .

$[\begin{array}{c} - 15 & 14 & 4 a \\ - 4 & 3 b + 2 b & 7 - 30 \\ 0 + 7 & - 3 c - 3 c & - 2 + 9 \end{array}]$

Etapa 2.5

Some $3 b$ e $2 b$ .

$[\begin{array}{c} - 15 & 14 & 4 a \\ - 4 & 5 b & 7 - 30 \\ 0 + 7 & - 3 c - 3 c & - 2 + 9 \end{array}]$

Etapa 2.6

Subtraia $30$ de $7$ .

$[\begin{array}{c} - 15 & 14 & 4 a \\ - 4 & 5 b & - 23 \\ 0 + 7 & - 3 c - 3 c & - 2 + 9 \end{array}]$

Etapa 2.7

Some $0$ e $7$ .

$[\begin{array}{c} - 15 & 14 & 4 a \\ - 4 & 5 b & - 23 \\ 7 & - 3 c - 3 c & - 2 + 9 \end{array}]$

Etapa 2.8

Subtraia $3 c$ de $- 3 c$ .

$[\begin{array}{c} - 15 & 14 & 4 a \\ - 4 & 5 b & - 23 \\ 7 & - 6 c & - 2 + 9 \end{array}]$

Etapa 2.9

Some $- 2$ e $9$ .

$[\begin{array}{c} - 15 & 14 & 4 a \\ - 4 & 5 b & - 23 \\ 7 & - 6 c & 7 \end{array}]$