Bob the builder is making480kg of concrete mix concrete is made by mixing cement, sand and gravel in the ratio 1 : 3 : 4 how much sand does he need

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

~

4+4+2x

or

2x+8

step-by-step explanation:

d. you cannot tell because there are no values shown.