Răspuns:
Explicație pas cu pas:
b)
2/3 - 3x/5 = 8/15
3x/5 = 2/3 - 8/15 = 10/15 - 8/15 = 2/15
x = 5*2/15*3 = 2/9
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d)
3/7*14/5*x*(-6/10) = 144/100
- 6x/5 *6/10 = 144/100
-36x/50 = 144/100
x = -50*144/100*36 = -4/2 = -2
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f)
7x/15 = -3 - 5/3 = -9/3 - 5/3 = -14/3
x = -14/3 *15/7 = -30/3 = -10
