50 students studying both maths and english. 90 students study either maths or english. if 25 students study eng not maths. how many students study maths but not english?

15 students study math and not English

Step-by-step explanation:

lets take the # or people who study math but not English as "x"

so 90 students study math or English

25 students study English and not math

and

50 study both

since 90 students study math or English that is what our equation will equal.

so

25+x+50=90

25+50=75

75+x=90

subtract "75" from both sides:

x=15

Hope this helps!

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.