Which expression is equivalent to 3.5(2x+4)-4(x−2.5)?

Question

3x+4

3x+24

-1.5x+1.5

or

-1.5x+0.75

Answer 1

Which expression is equal to 3.5(2x+4)-4(x-2.5)

This problem can be solved using the distribution property of multiplication.

If you have a(b+c) = ab + bc

so

3.5(2x+4) - 4 (x-2.5)

3.5(2x) + 3.5(4) - [(4x - (4)( 2.5)] Be careful with the subtraction of -4(x-2.5) I use brackets to help.

7x + 14 - [4x - 10]

7x +14 - 4x +10

3x + 24