a.3(×+6)=2(×+8)-10
b.3/4×+7=2/3×-5
c.5×-6=2×+8
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Tentukan penyelesaian dari persamaan berikut:
Jawabannya
a. 3× + 18 = 2× + 16 – 10
3× – 2× = 16 – 10
× = 6
b. 3/4× – 2/3× = 7 + 5
9/12× – 8/12× = 12
1/12× × 12 = 12 × 12
× = 144
c. 5× + 2× = 6 – 8
7× = -2
× = 0,2
^^^semoga bermanfaat^^^
A. 3(x+6)=2(x+8)
3x+18=2x+16
3x-2x+18=2x-2x+16
x+18=16
x+18-18=16-18
x=-2
b. 3/4x+7=2/3-5
12(3/4x+7)=12(2/3x-5)
9x+84=8x-60
9x-8x+84=8x-8x-60
x+84=-60
x+84-84=-60-84
x=-144
c.5x-6=2x+8
5x-2x-6=2x-2x+8
3x-6=8
3x-6+6=8+6
3x+14
x=14/3