Answer:
SAVE WATER
Explanation:
i)
x + 1 = 20
subtract 1 from both sides
x + 1 - 1 = 20 - 1
x = 19
19 = S
ii)
15 = 2x + 13
subtract 13 from both sides
15 - 13 = 2x + 13 - 13
2 = 2x
divide both sides by 2
2/2 = 2x/2
1 = x
1 = A
iii)
2x + 5 = 49
subtract 5 from both sides
2x + 5 - 5 = 49 - 5
2x = 44
divide both sides by 2
2x/2 = 44/2
x = 22
22 = V
iv)
= 9
multiply both sides by 2
x 2 = 9 x 2
3x + 3 = 18
subtract 3 from both sides
3x + 3 - 3 = 18 - 3
3x = 15
divide both sides by 3
3x/3 = 15/3
x = 5
5 = E
v)
8(x - 7) = 128
apply the distributive law
8x - 56 = 128
add 56 to both sides
8x - 56 + 56 = 128 + 56
8x = 184
divide both sides by 8
8x/8 = 184/8
x = 23
23 = W
vi)
16 = 2(x + 7)
apply the distributive law
16 = 2x + 14
subtract 14 from both sides
16 - 14 = 2x + 14 - 14
2 = 2x
divide both sides by 2
2/2 = 2x/2
1 = x
1 = A
vii)
= 20
sevens cancel out
y = 20
20 = T
viii)
2x - 1 = 9
add 1 to both sides
2x - 1 + 1 = 9 + 1
2x = 10
divide both sides by 2
x = 5
5 = E
ix)
2(x - 8) = 20
apply the distributive property
2x - 16 = 20
add 16 to both sides
2x - 16 + 16 = 20 + 16
2x = 36
divide both sides by 2
2x/2 = 36/2
x = 18
18 = R
Code Word/s: SAVE WATER
hope this helps :)