Question

3.Determine x,y e z para que as matrizes sejam iguais.​

Answer 1

Explicação:

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$\left(\begin{array}{ccc}3x-y&5\\3z&4\\\end{array}\right)=\left(\begin{array}{ccc}4&y\\15&4\\\end{array}\right)$

Calculando o valor de y:

$\boxed{\boxed{y=5}}$

Calculando o valor de z:

$3z=15\\\\z=\dfrac{15}{3}\\\\\boxed{\boxed{z=5}}$

Calculando o valor de x:

$3x-y=4\\\\3x-5=4\\\\3x=4+5\\\\3x=9\\\\x=\dfrac{9}{3}\\\\\boxed{\boxed{x=3}}$