Răspuns:
Explicație pas cu pas:
7*x - 8 = 13
7*x = 13 + 8 = 21
x = 21 : 7 = 3
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3/4 - 5/6 *x = 1/4
5/6*x = 3/4 - 1/4 = 2/4 = 1/2
x = 1/2 : 5/6 = 1/2*6/5 = 3/5
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2/5 x - 1/2 = 1/10
2/5x = 1/10 + 1/2 = 1/10 + 5/10 = 6/10 = 3/5
x = 3/5 : 2/5 = 3/5*5/2 = 3/2
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1/8 + 1/2*(2x - 1) = 2x - 1/8*(8x - 1) - 1/4*(4x - 2)
1/8 + x - 1/2 = 2x - x + 1/8 - x + 2/4
1/8 + x - 4/8 = 1/8 + 4/8
x = 1/8 + 4/8 + 4/8 - 1/8 = 8/8 = 1
