i need help solving these problems and many others...pleazzzz help
2006-11-02 10:27:10 · 6 answers · asked by Anonymous in Education & Reference ➔ Homework Help
6. 6x-21=33+9x 7. -15x=-5(3x+7) 8. 16x-19=113-6x 9. -19x-34=56-x 10. -6(4x+3)=6(4x-3)?
6. 6x-21 = 33 +9x
+21 + 21
6x = 54 + 9x
-9x -9x
-3x = 54
/3 /3
x = -18
7. -15x = -5(3x+7)
First multiply the -5 to the other numbers.
-15x = -15x - 35
0x = -35
7 is impossible I believe.
8. 16x-19 = 113-6x
+6 +6
22x - 19 = 113
+ 19 +19
22x = 132
/22 /22
x = 6
9. -19x - 34 = 56 - x
+19x +19x
-34 = 56 + 18x
-56 -56
-90 = 18x
/18 /18
x = -5
10. -6(4x+3) = 6[4x-3]
-24x - 18 = 24x - 18
+18 +18
-24x= 24x
x = 0, since only zero can make the equation true.
2006-11-02 10:30:38 · answer #1 · answered by serpagon 3 · 1⤊ 0⤋
6x-21= 9x+33
-6x = -6x
-21= 3x+33
-33= -33
-54= 3x
(divde) /3 = / 3
-18 = x
you do all of them the same way except the ones with paraenthesis multiply them first like for #7
-15x = -5(3x+7)
-15x = -15x-35
+15x = +15 - 35
0 = 0 -35
0 = 35
your answer is no solution since 0 does not equal 35.
Try solving the rest!!!!!!!!
2006-11-02 18:50:23 · answer #2 · answered by cortez_yessica 1 · 0⤊ 0⤋
6. 3x=-54 therefore x=-18
7. -15x+15x=-35 therefore 0=-35 impossible
8. 22x=132 therefore x=6
9. -18x=90 therefore x=-5
10. -48x=0
2006-11-02 18:45:30 · answer #3 · answered by moule 3 · 0⤊ 0⤋
6x-21=33+9x
-21+33=9x-6x
12=3x
4=x
-15x=-5(3x+7)
-15x=-15x-7
0x=-7
this is either wrong, or there is no solution to it
16x-19=113-6x
16x+6x=113+19
22x=132
x=6
-19x-34=56-x
-19x+x=56+34
-18x=90
x=-5
-6(4x+3)=6(4x-3)
-24x-18=24x-18
-24x-24x=-18+18
-42x=0
x=0
2006-11-02 18:39:30 · answer #4 · answered by roshky 2 · 0⤊ 1⤋
6. x=5
7. x=-3
8. x=19
9. x=-7
10. x=3.4
2006-11-02 18:35:01 · answer #5 · answered by shaan 2 · 0⤊ 1⤋
6. x= -18
7. x= -1.17
8. x= 6
9. x= -4.5
10. x=0
hope it helps
2006-11-02 18:33:43 · answer #6 · answered by Eryn 2 · 1⤊ 0⤋