Uprośc wyrażenia algebraiczne: 4x + 5 - x - 4 + x - 3x 0,5a-2a+9-0,5a-11,5 -14k+9k-13+k+3+4k -3k+2m+5m-7+k-m 2x-4+3x-2 x-3y-2x+6y 2y-5-3y-4-8y+9 zad.2 a) -5t+t-6-7t+8t+2+2t dla t = -3,2 b) -7x+6y+3x-2y+x-3y dla x+ - dwie trzecie i y + cztery siódme
70go
Uprość wyrażenia algebraiczne: 4x + 5 - x - 4 + x - 3x = x+1
0,5a-2a+9-0,5a-11,5 = -2a-2,5
-14k+9k-13+k+3+4k = -10
-3k+2m+5m-7+k-m = -2k+6m-7
2x-4+3x-2 = 5x-6
x-3y-2x+6y = -x+3y
2y-5-3y-4-8y+9 = -9y
zad.2 a) -5t+t-6-7t+8t+2+2t = -t-4 = -(-3,2)-4 = -0,8
b) -7x+6y+3x-2y+x-3y = -3x+y = -3*⅔+⁴/₇ = -2+⁴/₇ = -1³/₇
4x + 5 - x - 4 + x - 3x = x+1
0,5a-2a+9-0,5a-11,5 = -2a-2,5
-14k+9k-13+k+3+4k = -10
-3k+2m+5m-7+k-m = -2k+6m-7
2x-4+3x-2 = 5x-6
x-3y-2x+6y = -x+3y
2y-5-3y-4-8y+9 = -9y
zad.2
a)
-5t+t-6-7t+8t+2+2t =
-t-4 =
-(-3,2)-4 =
-0,8
b)
-7x+6y+3x-2y+x-3y =
-3x+y =
-3*⅔+⁴/₇ =
-2+⁴/₇ =
-1³/₇
0,5a-2a+9-0,5a-11,5 = -2a-2,5
-14k+9k-13+k+3+4k= -10
-3k+2m+5m-7+k-m = -2k+6m-7
2x-4+3x-2 = 5x-6
x-3y-2x+6y = -x+3y
2y-5-3y-4-8y+9 = -9y
a) -5t+t-6-7t+8t+2+2t dla t = -3,2
-5*(-3,2)-3,2-6-7*(-3,2)+8*(-3,2)+2+2*(-3,2) = 16-3,2-6+22,4-25,6+2-6,4= -0,8