Question

calcular as adições algébricas.
a) 6x +5y-(2x+3y) -8
b) 6ab-2b+4a-6b+ab
c) 0,7x-0,5+0,3x-1,4y+y
d) 7a-(3a+2b-5a)-8b

Answer 1

a) 6x +5y-(2x+3y) -8
6x+5y-2x-3y-8
6x-2x+5y-3y-8
4x+2y-8


b) 6ab-2b+4a-6b+ab
6ab+ab-2b-6b+4a
7ab-8b+4a



c) 0,7x-0,5+0,3x-1,4y+y

x-0.5-0,4y



d) 7a-(3a+2b-5a)-8b

7a-3a-2b+5a-8b

9a-2b-8b

9a-10b