Question

Tolong dijawab dong

tentukanlah penyelesaian persamaan berikut
1. m + 10 = 15
2. y + 4 = 17
3. 3d - 17 = 2d + 5
4. 8f - 7f + 7 = 19
5. 2y = y + 4

Answer 1

M = 15 - 10 = 5

y = 17-4 = 13

3d -2d = 5+17
d = 23

f = 19-7
f=12

2y-y = 4
y = 4

Answer 2

1. m + 10 = 15
<=> m + 10 -10 = 15 - 10
<=> m = 5
HP = { 5 }
2. y + 4 = 17
<=> y + 4 - 4 = 17 - 4
<=> y = 13
HP = { 13 }
3. 3d - 17 = 2d + 5
<=> 3d - 17 + 17 = 2d + 5 + 17
<=> 3d = 2d + 22
<=> 3d - 2d = 2d -2d + 22
<=> d = 22
HP = { 22 }
4. 8f - 7f + 7 = 19
<=> f + 7 - 7 = 19 - 7
<=> f = 12
HP = { 12 }
5. 2y = y + 4
<=> 2y - y = y - y + 4
<=> y = 4
HP = { 4 }
Semoga membantu..
Jangan lupa dihitung ulang, klo misalnya ada yang kurang teliti.. ^_^