Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
2\left(x+2\right)+5\left(x+3\right)=40
Me whakarea ngā taha e rua o te whārite ki te 10, arā, te tauraro pātahi he tino iti rawa te kitea o 5,2.
2x+4+5\left(x+3\right)=40
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x+2.
2x+4+5x+15=40
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te x+3.
7x+4+15=40
Pahekotia te 2x me 5x, ka 7x.
7x+19=40
Tāpirihia te 4 ki te 15, ka 19.
7x=40-19
Tangohia te 19 mai i ngā taha e rua.
7x=21
Tangohia te 19 i te 40, ka 21.
x=\frac{21}{7}
Whakawehea ngā taha e rua ki te 7.
x=3
Whakawehea te 21 ki te 7, kia riro ko 3.
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