Question

Sederhanakan :

a. ( 3x + 5 ) -3 ( x + 1)
b. ( 5y + 3 ) +7 ( 2y - 4 )
c. 3 ( k - 4 ) -4 ( k + 1 )
d. 2 ( 4x - 7 ) + ( x + 5y + 1 )

Dengan cara kerjanya yaa....!!!!! : )

Answer 1

a. ( 3x + 5 ) -3 ( x + 1) = 3x+5-3x-3 = 3x-3x+5-3 = 2
b. ( 5y + 3 ) +7 ( 2y - 4 ) = 5y+3+14y-28 = 5y+14y+3-28 = 19y-25
c. 3 ( k - 4 ) -4 ( k + 1 ) = 3k-12-4k-4 = 3k-4k-12-4 = -k-16
d. 2 ( 4x - 7 ) + ( x + 5y + 1 ) = 8x-14+x+5y+1 = 8x+x+5y-14+1 = 9x+5y-13