In need to know how to solve these can't really understand how

in examples like question 4, just combine the fractions on the side with more than one fractions into one whole single fraction first.

(2k + 5) / 5 = (3k + 1) / 2 + (-k +7) / 2

(2k + 5) / 5 = (3k + 1 - k + 7) / 2

(2k + 5) / 5 = (2k + 8) / 2

then, cross-multiply both sides.

10k + 40 = 4k + 10

6k = 30

k = 5

[basically put like terms together and make them into a single fraction. if separated by an equal sign, cross multiply and simplify the equation.]

89

step-by-step explanation:

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation: