Which expression is equivalent to
2(5m) + m?
a) 11m
b) 12m
c) 5m + 2
d) 7m + 2m

choice a.)  11m

Step-by-step explanation:

2(5m) + m  =  10m + m = 11m

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: