Question

Solve the following equations. a. q + 35 = 78 b. 200 + x = 450 c. k – 68 = 72 d. 437 – m = 25

Answer 1

a. q + 35 = 78

q = 35 – 35= 78 – 35

q = 43

b. 200 + x = 450

200 – 200 + x = 450 – 200

x = 250

c. k – 68 = 72

k – 68 + 68 = 72 + 68

k = 140

d. 437 – m = 25

437 – m + m = 25 + m

437 = 25 + m

412 = m

Explanation:

Answer 2

a) q + 35 = 78 (subtract 35 from 78)

q = 43

b) 200 + x = 450 (subtract 200 from 450)

x = 250

c) k - 68 = 72 (add 68)

k = 140

d) 437 - m = 25 (you can do this in one step, but add m to other side or divide everything by -1 to get m pos)

m + 25 = 437 (subtract 25)

m = 412