Question

1) Efetue: a) (+7x) + (-3x) = b) (+5x) + (-5x) = c) (+ 15x) - (-3x) - (+7x) + (-2x) = d) 2x + 3b - 5x -7b = e) 6y +4m -10 -8y +12=​

Answer 1

Explicação passo-a-passo:

a) 7x -3x= 4x

b) 5x -5x=0

c) 15x +3x -7x-2x= 18x - 9x= +9x

d) 2x -5x +3b -7b= -3x - 4b

e) 6y -8y +4m -10+12= -2y +4m +2