Question
From the sum of 3x - y + 11 and - y - 11, subtract 3x – y – 11. Write the algebraic expression. [3 MARKS]
Answer:
:
Forming the equation: 1 Mark
Steps: 1 Mark
Result: 1 Mark
According to question,
= (3x - y + 11) + (- y - 11) - (3x - y - 11)
= 3x - y + 11 - y - 11 - 3x + y + 11
= 3x - 3x - y - y + y + 11 - 11 + 11
= (3 - 3)x - (1 + 1 - 1)y + 11 + 11 -11
= 0x - y + 11
= -y +11
The required expression is-y +11.
Was this answer helpful ?
:
Forming the equation: 1 Mark
Steps: 1 Mark
Result: 1 Mark
According to question,
= (3x - y + 11) + (- y - 11) - (3x - y - 11)
= 3x - y + 11 - y - 11 - 3x + y + 11
= 3x - 3x - y - y + y + 11 - 11 + 11
= (3 - 3)x - (1 + 1 - 1)y + 11 + 11 -11
= 0x - y + 11
= -y +11
The required expression is-y +11.
Was this answer helpful ?
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