Whakaoti mō x
x=60
Graph
Tohaina
Kua tāruatia ki te papatopenga
x\times 175=\left(x+15\right)\times 140
Tē taea kia ōrite te tāupe x ki tētahi o ngā uara -15,0 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te x\left(x+15\right), arā, te tauraro pātahi he tino iti rawa te kitea o x+15,x.
x\times 175=140x+2100
Whakamahia te āhuatanga tohatoha hei whakarea te x+15 ki te 140.
x\times 175-140x=2100
Tangohia te 140x mai i ngā taha e rua.
35x=2100
Pahekotia te x\times 175 me -140x, ka 35x.
x=\frac{2100}{35}
Whakawehea ngā taha e rua ki te 35.
x=60
Whakawehea te 2100 ki te 35, kia riro ko 60.
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