Tentukanlah langkah yang salah dalam penyelesaian persamaan dibawah ini. jenlaskan mengapa salah, kemudian tulislah penyelesaiannya yg benar. a. 2x=11x+45 2x-11x=11x-11x+45 9x= 45 9x/9 = 45/9 x= 5 b. 5/2-y=2(y-3/2) 5/2-y-y=2y-y-3/2 5/2=y-3/2 5/2+3/2=y y=8/2=4
crutudg
A. 2x = 11x + 45 2x - 11x = 45 - 9x = 45 x = - 5 b. 5/2-y=2(y-3/2) 11/2 - 3y = 0 y = 11/6
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Qnay
Langsung jawaban benar aja yaa.... a. 2x = 11x + 45 2x - 11x = 45 - 9x = 45 x = 45 / - 9 x = - 5
b. 5/2 - y = 2 (y - 3/2) 5/2 - y = 2y - 3 5/2 + 3 = 2y + y 5/2 + 6/2 = 3y 11/2 = 3y y = 11/2 . 1/3 y = 11/6
2x - 11x = 45
- 9x = 45
x = - 5
b. 5/2-y=2(y-3/2)
11/2 - 3y = 0
y = 11/6
a. 2x = 11x + 45
2x - 11x = 45
- 9x = 45
x = 45 / - 9
x = - 5
b. 5/2 - y = 2 (y - 3/2)
5/2 - y = 2y - 3
5/2 + 3 = 2y + y
5/2 + 6/2 = 3y
11/2 = 3y
y = 11/2 . 1/3
y = 11/6