1.) 4(1-x) - 3(x ditambah 2)=19 2.) ½(x-3)=3/5×-4 3.) 2(x ditambah 3)=5x-24 4.) x-5 (3-x)=9 5.) ½(4-x) ditambah ½x =2(x ditambah 2)
Matematika
nisa1657
Pertanyaan
1.) 4(1-x) - 3(x ditambah 2)=19 2.) ½(x-3)=3/5×-4 3.) 2(x ditambah 3)=5x-24 4.) x-5 (3-x)=9 5.) ½(4-x) ditambah ½x =2(x ditambah 2)
1 Jawaban
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1. Jawaban cupid85
1) 4(1 - x) - 3(x + 2) = 19
4 - 4x - 3x - 6 = 19
- 7x - 2 = - 19
- 7x = - 19 + 2
- 7x = - 17
x = 17/7
x = 2 ³/7
2) ½ (x - 3) = ³/5 x - 4
½ x - ³/2 = ³/5 x - 4
½x - ³/5 x = ³/2 + 4
5/10 x - 6/10 x = 3/2 + 8/2
- 1/10 x = 11/2
x = 11/2 ÷ - 1/10
x = 11/2 × 10/1
x = 55
3) 5x - 24 = 0
5x = 24
x = 24/5
x = 4 ⁴/5
5) ½(4 - x) + ½x = 2(x + 2)
2 - ½x + ½x = 2x + 4
2 - 4 = 2x
2x = - 2
x = - 1