Вопрос школьника по предмету Математика
Розв’яжіть рівняння: а) 5х+2х=70. в)5х-10х=45. б)-12х+10х=4. г)-3х-2х=-16
СРОЧНОООООООООООО ОЧЕНЬЬЬЬЬ, ЧЕРЕЗ 15 МИН СДАВАТЬ, ПОМОГИТЕЕЕ
Ответ учителя по предмету Математика
Ответ:
a)5x+2x=70 7x=70 x=10, b) 5х-10х=45 -5x=45 x=-9,б)-12х+10х=4 -2x=4 x=-2. г)-3х-2х=-16 -5x=-16 x=16/5
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