ayudaaaaaa xfa urgenteee
5/2 + 1/5 = 2/3 - x
2/7 - 1/4 = 3-x
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5/2 + 1/5 = 2/3 - x
saca mcm:
(25+2)/10 = (2-3x)/3
27/10 = (2-3x)/3
3*27 = 10*(2-3x)
81 = 20 - 30x
30x = 20-81
30x = -61
x = -61/30
2/7 - 1/4 = 3 - x
(2*4 - 1*7)/28 = 3-x
1/28 = 3-x
x = 3 - 1/28
x = (3*28 - 1)/28
x = 83/28
saca mcm:
(25+2)/10 = (2-3x)/3
27/10 = (2-3x)/3
3*27 = 10*(2-3x)
81 = 20 - 30x
30x = 20-81
30x = -61
x = -61/30
2/7 - 1/4 = 3 - x
(2*4 - 1*7)/28 = 3-x
1/28 = 3-x
x = 3 - 1/28
x = (3*28 - 1)/28
x = 83/28
MilagrosbarbaraR:
son fracciones
sí
esta sabes?
(-2/7) : [4/5: (3/4*2/5) ] * 3
(-2/7)/[4/5 : (3/10)] * 3
(-2/7)/[4/5 * (10/3)] * 3
(-2/7) / (8/3) * 3
(-2/7)*(3/8)*3
-18/56
-9/28
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