Ok i need help.

A. 31(-10)=-310

a positive multiplied by a negative is negative.

a negative multiplied by a negative is positive

a positive multiplied by a positive is positive

I hope this is good enough:

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: