Activity 4 Write an expression for the problem. Then, solve. 17. Multiply 6 and 2 plus eight. 18. Multiply the sum of 4 and 10 by 7. 19. Subtract 4 from 10, then multiply by the quotient of 24 and 3 20. Divide the sum of 24 and 4 by 7 then subtract from the cube of 5.