Tentukan himpunan berikut ! a. 3 (m-1) + 5 = m x 10 b. 17 - 3 (x + 11) = x + 12
mellypradani91
A. 3(m-1)+5=m x 10 3m-3+5 = m x 10 3m+2 = m x 10 3m-m =-2 x 10 2m = -20 m = -20/2 m = -10 b. 17-3 (x+11)=x +12 17x + 187 -3x -33 = x +12 14x + 154 = x + 12 14x - x = 12 -154 13x = -142 x = -142/13 x = -10,92
maaf kalo salah :)
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081210097797
A. 3(m-1) + 5 = m x 10 3m - 3 = m x10 3m-m = 3 x 10 2m = 30 m = 30 : 2 = 15
3m-3+5 = m x 10
3m+2 = m x 10
3m-m =-2 x 10
2m = -20
m = -20/2
m = -10
b. 17-3 (x+11)=x +12
17x + 187 -3x -33 = x +12
14x + 154 = x + 12
14x - x = 12 -154
13x = -142
x = -142/13
x = -10,92
maaf kalo salah :)
3m - 3 = m x10
3m-m = 3 x 10
2m = 30
m = 30 : 2 = 15