Question

-0.4a + 1.2 = 3.6 what is a

Answer 1

a=-6

-0.4a+1.2=3.6
Subtract 1.2 from both sides
-0.4a=3.6-1.2
Subtract1.2 from 3.6 to get 2.4
-0.4a=2.4
Divide both sides by -0.4
a=2.4/-0.4

Expand 2.4/-0.4 by multiplying both numerator and the denominator by 10
a=24/-4.
Divide 24 by -4 to get -6

a=-6

Answer 2

`\sf \: a = - 6`

Explanation:

Now we have to,

→ Find the required value of a.

The equation is,

→ -0.4a + 1.2 = 3.6

Then the value of a will be,

→ -0.4a + 1.2 = 3.6

→ -0.4a = 3.6 - 1.2

→ -0.4a = 2.4

→ -4a = 24

→ a = 24 ÷ (-4)

→ [ a = -6 ]

Hence, the value of a is -6.