Question

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

Answer 1

Answer:

40

Step-by-step explanation:

using transposition method=

lets take the lowest marks as x

then 2 times is multiplied by x and

+ 7

so, equation is

2x+7=87

7 is added here so when taken to rhs,it will subtract

2x=87-7

2x=80

2 is multiplied here and when taken to rhs,it will divide

x=80÷2

x=40

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