Considere as matrizes a, b e c, quadradas da mesma ordem. sabe-se wue a=b=c e que a11=x+3y; b11=4x+2y e c11= 10, sendo a11,b11 e c11 os elementos da primeira linha e primeira coluna das matrizes a, b e c, respectivamente. com essas informações, qual o valor de x.y?

2 8/15 or 38/15

Step-by-step explanation:

For fraction multiplication, multiply the numerators and then multiply the denominators to get  152/60 . This fraction can be reduced by dividing both the numerator and denominator by the Greatest Common Factor of 152 and 60 . The fraction  38/15  is the same as  38÷15  Convert to a mixed number using

long division, so

38/15=2 8/15

Therefore:

8/5×19/12=2 8/15