7) 2.1x + 45.2 = 3.2 -8.4x

x=-4, Give brainliest please

Step-by-step explanation:

Step 1: Add 8.4x to both sides.

2.1x+45.2 =  -8.4x +3.2

       +8.4x    +8.4x

10.5x+45.2=3.2

Step 2: Subtract 45.2 from both sides.

10.5x + 45.2 = 3.2

         -45.2    -45.2

10.5x=−42

Step 3: Divide both sides by 10.5.

=

x=−4

i think is 3 and 6. this took me 10 min to think.hope to and hope that my answer is brainliest.(follow me )