rozwiąż równanie w postaci proporcji:
a) x/10=1,2/2,5
b)4/3=x+1/4,5
a) x - 10
1.2 - 2.5
_____________
2.5x=12/:2.5
x=4.8
b) 4 - 3
x+1 - 4.5
_______________
4x=18/:4
x=4.5
a)
x/10=1.2/2.5
x*2.5= 10*1.2
2.5x=12 |/2.5
b)
4/3= x+1/4.5
3*(x+1)=4*4.5
3x+3=18
3x=18-3
3x=15|/3
x=5
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a) x - 10
1.2 - 2.5
_____________
2.5x=12/:2.5
x=4.8
b) 4 - 3
x+1 - 4.5
_______________
4x=18/:4
x=4.5
a)
x/10=1.2/2.5
x*2.5= 10*1.2
2.5x=12 |/2.5
x=4.8
b)
4/3= x+1/4.5
3*(x+1)=4*4.5
3x+3=18
3x=18-3
3x=15|/3
x=5