21 × 6 ÷ 7 + 12 - 15​

15

Step-by-step explanation:

By order of operations, multiplication and division are done first, then the addition and subtraction

21*6 = 126

126/7 = 18

18 + 12 = 30

30 - 15 = 15

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75