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a. 5x + 5 dan 3x + 7
= (5x+5)+(3x+7)
= 5x+5+3x+7
= 5x+3x+5+7
= 8x+12
b. y² + 10 dan 5y² - 2x
= (y²+10)+(5y²-2x)
= y²+10+5y²-2x
= y²+5y²-2x+10
= 6y²-2x+10
c. 7p - 4p + 25 dan 5p +2q - 50
= (7p-4p+25)+(5p+2q-50)
= 3p+25+5p+2q-50
= 3p+5p+2q+25-50
= 8p+2q-25
kurangkanlah!
a. 5x + 4 dari 8x + 2
= (5x+4)-(8x+2)
= 5x+4-8x-2
= 5x-8x+4-2
= -3x+2
b. a +b + 3 dari 3a + 4b - 5
= (a+b+3)-(3a+4b-5)
= a+b+3-3a-4b+5
= a-3a+b-4b+3+5
= -2a-3b+8
c. 6(x² - 2) dari 4(2x² + 2)
= 6x²-12-8x²+8
= 6x²-8x²-12+8
= -2x²-4