Wylicz x ze wzorów a)x/2 +a=b b)(x+a):2=c c)2x-a=b

[latex] frac{x}{2} + a = b /*2 x + 2a = 2 b x = 2 b - 2a x = 2 (b - a)[/latex] b) [latex] frac{x + a }{2} = c /*2 x + a = 2 c x = 2c - a[/latex] c) [latex]2x - a = b 2x = b + a/:2[/latex] [latex]x = frac{b+a}{2} [/latex]