Question

2. Efetuar as operações:A) 6abc +2abc-3abc+7abc=B) 3/4 xy2+ 5/4 xy2 - 1/8 xy2C) 0,8y3z-1,2y3z+0,3y3zD) 5ab-3ab+2ab-7ab

Answer 1

A)
6abc + 2abc - 3abc + 7abc = 12abc

B)
3/4xy² + 5/4xy² - 1/8xy² = 6/8xy² + 10/8xy² - 1/8xy² = 15/8xy²

C)
0,8y³z - 1,2y³z + 0,3y³z = -0,1y³z

D)
5ab - 3ab + 2ab - 7ab = -3ab