B) 2(n-6) + 13 = n - 3 + 27 C) 4(1-x) - (1 - 3x) = 3 D) -(-1/4a + 1) + 3a/2 = 9 Kto rozwiąże pilne na jutro !! Daje naj !!

b) [latex]2(n-6) + 13 = n - 3 + 27\ 2n-12+13=n+24\ 2n+1=n+24\ n=25[/latex] c) [latex]4(1-x) - (1 - 3x) = 3\ 4-4x-1+3x=3\ -x=0\ x=0[/latex] d) [latex]-(-1/4a + 1) + 3a/2 = 9\ frac{1}{4}a-1+frac{6}{4}a=9\ frac{7}{4}a=10\ a=10*frac{4}{7}\ a=frac{40}{7}=5frac{5}{7}[/latex]