Question

a ). 3-[4+(-8-x)]=1
b). ( x+3)×(y-4)=5​

Answer 1

Răspuns:

3(x-1)+2(y+4)=24

3x-3+2y+8=24

3x+5+2y=24

3x=24-5-2y

3x=19-2y

x=19 supra 3 - 2supra 3 y

3(y+1)+x2=(x+1)*(x-1)-2x

3y+3+x2=x2-1-2x

3y+3 = -1-2x

3y = -1-2x-3

3y = -4-2x

y = -4 supra 3 - 2 supra 3 x

x2 inseamna x la 2

Explicație pas cu pas: