Question

A-2=-1 + 2a-4-1

send me the work please! (solving equations with variables on both sides)

Answer 1

The value of "a" is 4

Solution:

Given expression is:

`a - 2 = -1 + 2a - 4-1`

The above expression involves variables and constants

A variable is a symbol that represents an unknown number

Here the variable is "a"

Constants are fixed numbers like 1, 2 etc

From given expression:

`a - 2 = -1 + 2a - 4-1`

Move the varibale "2a" from right side to left side of equation

When, 2a is moved from R.H.S to L.H.S, it becomes -2a

`a -2a - 2 = -1 -4-1`

Now move the constant -2 from left side to right side of equation

Similarly, when -2 is moved from L.H.S to R.H.S, it becomes +2

`a-2a = -1-4-1+2`

Now add the variables on left side of equation

`-a = -1-4-1+2`

Now add the constants on right side of equation

`-a = -6+2\\\\-a = -4`

Cancel the negative sign on both sides of equation

`a=4`

Thus the value of "a" is 4