Whakaoti mō x
x=-\frac{7y}{5}+70
Whakaoti mō y
y=-\frac{5x}{7}+50
Graph
Tohaina
Kua tāruatia ki te papatopenga
0.5x=35-0.7y
Tangohia te 0.7y mai i ngā taha e rua.
0.5x=-\frac{7y}{10}+35
He hanga arowhānui tō te whārite.
\frac{0.5x}{0.5}=\frac{-\frac{7y}{10}+35}{0.5}
Me whakarea ngā taha e rua ki te 2.
x=\frac{-\frac{7y}{10}+35}{0.5}
Mā te whakawehe ki te 0.5 ka wetekia te whakareanga ki te 0.5.
x=-\frac{7y}{5}+70
Whakawehe 35-\frac{7y}{10} ki te 0.5 mā te whakarea 35-\frac{7y}{10} ki te tau huripoki o 0.5.
0.7y=35-0.5x
Tangohia te 0.5x mai i ngā taha e rua.
0.7y=-\frac{x}{2}+35
He hanga arowhānui tō te whārite.
\frac{0.7y}{0.7}=\frac{-\frac{x}{2}+35}{0.7}
Whakawehea ngā taha e rua o te whārite ki te 0.7, he ōrite ki te whakarea i ngā taha e rua ki te tau huripoki o te hautanga.
y=\frac{-\frac{x}{2}+35}{0.7}
Mā te whakawehe ki te 0.7 ka wetekia te whakareanga ki te 0.7.
y=-\frac{5x}{7}+50
Whakawehe 35-\frac{x}{2} ki te 0.7 mā te whakarea 35-\frac{x}{2} ki te tau huripoki o 0.7.
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