Question

Sederhanakanlah bentuk aljabar berikut.
1.2x+3y-4x-5y
2.7a(1+b)-3b(1+a)
3.3b-bx / cx-3c
4.(3/x+1)+(3/x-1)

Answer 1

1. 2x-4x+3y-5y = -2x-2y
2. (7a+7ab) - (3b+3ab) = 7a+7ab-3b-3ab
                                 = 7a+7ab-3ab-3b = 7a+4ab-3b

Answer 2

1. -2x-2y
2. 7a + 7ab -3b -3a = 4a + 7ab -3b
3. 3b-bx  = b(3-x)  = -b(x-3) = -b
   cx-3c     c(x-3)       c(x-3)     c
4. (3/x+1)+(3/x-1) = 3+x + 3-x  = 6
                                  x        x      x
smoga bantuu