Answer:
1. x + 5 = 12
x = 12 - 5
x = 7
2. 1000 - [(3×140) + (2×150)] = N
1000 - [420 + 300] = N
1000 - 720 = N
N = 280
Her change was P280.
3. x + 3 = 8
x = 8 - 3
x = 5
The number is 5.
4. 3x + 11 = 35
3x = 35 - 11
3x = 24 (Divide both sides by 3.)
x = 8
The number is 8.
5. 50 + 2x = 200
2x = 200 - 50
2x = 150 (Divide both sides by 2)
x = 75
She saved P75 last week.
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Answers & Comments
Answer:
1. x + 5 = 12
x = 12 - 5
x = 7
2. 1000 - [(3×140) + (2×150)] = N
1000 - [420 + 300] = N
1000 - 720 = N
N = 280
Her change was P280.
3. x + 3 = 8
x = 8 - 3
x = 5
The number is 5.
4. 3x + 11 = 35
3x = 35 - 11
3x = 24 (Divide both sides by 3.)
x = 8
The number is 8.
5. 50 + 2x = 200
2x = 200 - 50
2x = 150 (Divide both sides by 2)
x = 75
She saved P75 last week.