Question

the teacher tells the class that the highest mark obtained by a student in her class is twice the lowest marks plus 7 the highest score is 87 what is the lowest score



this is mine I question ​

Answer 1

Answer:

Step-by-step explanation:

let the highest mark b x and lowest mark be y then the equation will be

x = 2 Y + 7

87=2y+7.

87-7=2y

80=2y.

y=80/2

y=40..marks

Answer 2

Answer:

40

Step-by-step explanation:

let the lowest score be x

highest marks= 2x+7

87= 2x+ 7

87-7 = 2x

80 = 2x

2x =80

x= 80 ÷ 2

x= 40