Question

1. Find the value of the unknown variable. a. 3(+2)−2(−1)=7
b. 8(2−5)−6(3−7)=1
2. Solve and check the result:
a. 3( − 1) = 2 − 11 b. 6 + 5 = 2 + 17
c. 3( − 3) = 5(2 + 1)

Answer 1

1. Find the value of the unknown variable. a. 3(+2)−2(−1)=7

b. 8(2−5)−6(3−7)=1

2. Solve and check the result:

a. 3( − 1) = 2 − 11 b. 6 + 5 = 2 + 17

c. 3( − 3) = 5(2 + 1)