Question

What is the value of x in the equation x − 7 = 11?

Answer 1

@GIL.ojei

Answer 2

you have to take like terms to one side

Answer 3

4?

Answer 4

\[x=7+11\]

Answer 5

18

Answer 6

7+11=18 ?

Answer 7

no, when a figue or variable crosses the equality , its sign changes

Answer 8

Oohh. so subtraction ?

Answer 9

so example,
x-2=5
= x=5+2
else if it is x+2=5, to solve this cross 2 to meet 5 but change the sign
x=5-2

Answer 10

do u get that?

Answer 11

I'm still confused

Answer 12

ok. lets solve this example,
take the equality(=) to be a sign changer

Answer 13

if its 7-11 than its 4 ?

Answer 14

look at
x+4=2

Answer 15

now, x is different from 4 but they are both on same side

Answer 16

The sign changes to -?

Answer 17

but solve for x, you have carry 4 to the other side of 2 since they are same but when carrying it to the other side, the sign will change cos of the equality(=) separating the two sides

Answer 18

Since the 7 and the 11 are on the same side you have to carry it over and change the sign?