Question

astea va rog dau coroana​

Answer 1

6. A) (x+6)+(x-4)=10
x+6+x-4=10
2x+2=10
2x=8
X=4
B) x+1+2•(x+3)-x+4=21
x+1+2x+6-x+4=21
2x+11=21
2x=10 X=5
C)2(x-3)+4(x-6)=6
2x-6+4x-24=6
6x-30=6
6x=36. X=6
D) (x+1)•2^2=20
x+1•4=20
x+4=20. X=16
E) 5^2•(x-3)=250
25(x-3)=250
25x-75=250
25x=325. X=13
6. A) 2x-4<=6
2x<=10. X<=5
B) 4x+1<17
4x<16. X<4
C) 6(2x-3)<42
12x-18<42
12x<60. X<5
D) 3x+1<=10
3x<=9. X<=3