Question

Se X=K , Y=2 e Z =K+1 na equação 4x+5.y-3z=10,então K=

Answer 1

x=k

y=2

z=k+1

4.x+5y-3z=10

4.k+5.2-3(k+1)=10

4k+10-3k-3=10

4k-3k+7=10

k+7=10

k=10-7

k=3