Question

Tentukan penyelesaian di atas! nomor 11-15​

Answer 1

Jawaban:

11. 2x-3=7 12.x+2=10-x 13.3x+3=24 14.3x+12=7x-8

2x=7+3 x+x=10-2 3x=24-3 3x-7x=8-12

2x=10 2x=8 3x=21 -4x=-4

x=10/2 x=8/2 x=21/3 x=-4/-4

x=5 x=4 x=7 x=1

15.3x+2=x-4

3x-x=-4-2.

2x=-6

x=-6/2

x=-3

semoga bermanfaat jangan lupa kasih jawaban tercedas ya

Answer 2

11

[tex]2x - 3= 7[/tex]

[tex]2x - 3 + 3 = 7 + 3[/tex]

[tex]2x = 10[/tex]

[tex] \frac{2x}{2} = \frac{10}{2} [/tex]

[tex]x = 5[/tex]

12

[tex]x + 2 = 10 - x[/tex]

[tex]x + 2 = - x + 10[/tex]

[tex]x + 2 - 2 = - x + 10 - 2[/tex]

[tex]x = - x + 8[/tex]

[tex]x + x = - x + 8 + x[/tex]

[tex]2x = 8[/tex]

[tex] \frac{2x}{2} = \frac{8}{2} [/tex]

[tex]x = 4[/tex]

13

[tex]3x + 3 = 24[/tex]

[tex]3x + 3 - 3 = 24 - 3[/tex]

[tex]3x = 21[/tex]

[tex] \frac{3x}{3} = \frac{21}{3} [/tex]

[tex]x = 7[/tex]

14

[tex]3x + 12 = 7x - 8[/tex]

[tex]3x + 12 - 12 = 7x - 8 - 12[/tex]

[tex]3x = 7x - 20[/tex]

[tex]3x - 7x = 7x - 20 - 7x[/tex]

[tex] - 4x = - 20[/tex]

[tex] \frac{ - 4x}{ - 4} = \frac{ - 20}{ - 4} [/tex]

[tex]x = 5[/tex]

15

[tex]3x + 2 = x - 4[/tex]

[tex]3x + 2 - 2 = x - 4 - 2[/tex]

[tex]3x = x - 6[/tex]

[tex]3x - x = x - 6 - x[/tex]

[tex]2x = - 6[/tex]

[tex] \frac{2x}{2} = \frac{ - 6}{2} [/tex]

[tex]x = - 3[/tex]