1.) 2x+9 = -7x+4? 2.) -3(-7x-5) = 2(-10x+4)? 3.) 1 per 2(5x+10) = 5 per 4(4x-8)? 4.)4x+7 per 3 = 5x-1 per 4? 5.)2x per 7 = 3x-1 per 2? Tulis Jawaban berserta Ja

1. 2x+9=-7+4
2x+9=-3
2x=-3-9=-12
x=-6

2. -3(-7x-5)=2(-10x+4)
21x+15=-20x+8
41x=-7
x=[tex]- \frac{7}{41} [/tex]

3. [tex] \frac{1}{2(5x+10)} = \frac{5}{4(4x-8)} [/tex]
4(4x-8)=10(5x+10)
16x-32=50x+100
16x-50x=100+32
-34x=132
x=[tex]- \frac{66}{17} [/tex]

4. [tex] \frac{4x+7}{3} = \frac{5x-1}{4} [/tex]
4(4x+7)=3(5x-1)
16x+28=15x-3
16x-15x=-3-28
x=-31

5. [tex] \frac{2x}{7}= \frac{3x-1}{2} [/tex]
4x=7(3x-1)
4x=21x-7
4x-21x=-7
-17x=-7
x=[tex] \frac{7}{17} [/tex]