Title: Suma i resta de 3 membres
Course: Matemàtiques 1r ESO 1r T

Q: {a}-{b}-{c}
A: {a}-{b}-{c} (formula; values not in the backup's text)

Q: {a}-{b}+{c}
A: {a}-{b}+{c} (formula; values not in the backup's text)

Q: {a}+{b}-{c}
A: {a}+{b}-{c} (formula; values not in the backup's text)

Q: {a}+{b}+{c}
A: {a}+{b}+{c} (formula; values not in the backup's text)

Q: -{a}-{b}-{c}
A: -1*{a}-{b}-{c} (formula; values not in the backup's text)

Q: -{a}-{b}+{c}
A: -1*{a}-{b}+{c} (formula; values not in the backup's text)

Q: -{a}+{b}-{c}
A: -1*{a}+{b}-{c} (formula; values not in the backup's text)

Q: -{a}+{b}+{c}
A: -1*{a}+{b}+{c} (formula; values not in the backup's text)