x + 78*x + 25*x + x*4=78,6 + 121,4
x*(1+78+25-4)=200
x* 100 =200
x = 200:100
x = 2
\(x+78\times x+25\times x-4\times x=78,6+121,4\)
\(\Rightarrow x\times\left(1+78+25-4\right)=200\)
\(\Rightarrow x\times100=200\)
\(\Rightarrow x=200\div100\)
\(\Rightarrow x=2\)
Vậy x=2
x + 78 * x + 25 * x - x * 4 = 78,6 + 121,4
x * ( 1 + 78 + 25 - 4 ) = 200
x * 100 = 200
x = 200 : 100
x = 2
Vậy x = 2
X + 78 x X + 25 x X – X x 4 = 78,6 + 121,4
X + 78 x X + 25 x X – X x 4 = 200
X + (78 + 25 – 4 + 1) = 200
X + 100 = 200
X = 200 : 100
X = 2
Bài giải:
X + 78 x X + 25 x X – X x 4 = 78,6 + 121,4
X = X x ( 78 + 25 – 4 + 1 ) = 200
X = X x 100 = 200
X = 200 : 100 = 2