MATH WORKSHOP 3 º ESO - NIT IES ALBA DE L'
Wednesday February 3, 2010
PRACTICE 3: solving equations of 1st and 2nd grade wiris
Solve the following activities with the calculator WIRIS:
a) 5 (2 + 7x) - 10 = 34x
b) -2 (1 - 3x) + 5 = 4 (x + 2)
d) (x + 1) · (x - 3) + 3 = 0 e) 4x - (x
2 - 4) = 2x - 4
PROBLEM: Carmen is 42 years and son 10. How many years must pass before the age of Carmen is three times that of the child?
Click HERE to learn how to solve equations
WIRIS
LINKS ON EQUATIONS
: http://www.emathematics.net/es/ecuacion.php?a=3 http://www. araguez.net / matt / indicemate.htm
http://www.vadenumeros.es/tercero/ecuaciones-de-primer-grado.htm
http://es.wikipedia.org/wiki/Ecuaci%
C3% B3n www.oup.com/word/es/0330204003.doc http://www.acienciasgalilei.com/mat/problemas/ejerc1mat-ecuaciones-1.htm