Question

Oblicz :
4(3x-5)=
5(8m+2)=
-2(5t+8)=
-3(2a-7)=
7(2-a-3b)=
-3(5p+2r+ 1/2)=
2(2a+5-3/4b)=
-2(3b-4a+0,5)=
Daje naj

Answer 1

4 * (3x - 5) = 12x - 20
5 * (8m + 2) = 40m + 10
-2 * (5t + 8) = -10t - 16
-3 * (2a - 7) = -6a + 21
7 * (2 - a - 3b) = 14 - 7a - 21b
-3* (5p + 2r + 1/2) = -15p - 6r - 1 i 1/2
2 * (2a + 5 - 3/4b) = 4a + 10 - 1 i 1/2b
-2 * (3b - 4a + 0,5) = -6b + 8a - 1

Answer 2

4(3x-5)= 4*3x - 4*5 = 12x-20
5(8m+2)= 5*8m + 5*2 = 40m+10
-2(5t+8)= -2*5t - 2+8 = -10t-16
-3(2a-7)= -3*2a + 3*7 = -6a+21 = 21-6a
7(2-a-3b)= 7*2 - 7*a - 7*3b = 14-7a-21b
-3(5p+2r+ 1/2)= -3*5p - 3*2r - 3*(1/2) = -15p-6r-1,5
2(2a+5-3/4b)= 2*2a + 2*5 - 2*(3/4)b = 4a+10-1,5b
-2(3b-4a+0,5)=  -2*3b + 2*4a - 2*0,5 = -6b+8a-1 = 8a-6b-1