Wykonaj działania :D Daję naj, szybko proszę. 1) a+(a-b) 2) 2x-(x+4) 3) 7-(-x+6) 4) -(x+4)+(x-5) 5) 1-(t+p)-(t-2) 6) -(-y+2)+(-2y-4) Dzięki ^ ^

1) a+(a-b) = a+a-b = 2a-b 2) 2x-(x+4) = 2x-x-4 = x-4 3) 7-(-x+6) = 7+x-6 = 1+x 4) -(x+4)+(x-5) = -x-4+x-5 = -9 5) 1-(t+p)-(t-2) = 1-t-p-t+2 = 3-2t-p 6) -(-y+2)+(-2y-4) = y-2-2y-4 = -y-6

1. a + (a - b) = a + a - b = 2a - b 2. 2x - (x - 4) = 2x - x + 4 = x + 4 3. 7 - (-x + 6) = 7 + x - 6 = x + 7 - 6 = x + 1 4. -(-x + 4) + (x - 5) = x - 4 + x - 5 = 2x - 9 5. 1 - (t + p) - (t - 2) = 1 - t + p - t + 2 = 3 - 2t + p 6. -(-y + 2) + (-2y - 4) = y - 2 + (-2y) - 4 = -y - 6