rozwiąż równania:
a. ½*(x+4+x)*5=20
b. 2x+(3x-2)+(x+1)+(1+x)+(3x-2)=28
c. 6*(x+1)+½*(6+4)*x=28
5/2 x + 10 + 5/2 x = 20
5/2x+5/2x=20-10
5x = 10
x=2
2x+3x-2+x+1+1+x+3x-2=28
2x+3x+x+x+3x=28+2-1-1+2
6x+6+3x+2x=28
6x+3x+2x=28-6
11x=22
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rozwiąż równania:
a. ½*(x+4+x)*5=20
5/2 x + 10 + 5/2 x = 20
5/2x+5/2x=20-10
5x = 10
x=2
b. 2x+(3x-2)+(x+1)+(1+x)+(3x-2)=28
2x+3x-2+x+1+1+x+3x-2=28
2x+3x+x+x+3x=28+2-1-1+2
10x=30 x=3c. 6*(x+1)+½*(6+4)*x=28
6x+6+3x+2x=28
6x+3x+2x=28-6
11x=22
x=2