Identify which
statements are
2x + 3x = 5x
b + b = 2b
2x - 3x = -2x
5y + 5 = 10y
2x - 2x = 4x
b + b = b2
2x - 2x = x
5y - 4y = y
7x - 3x = 4x
3b - b = 2b
2a – 2a = -4a
3x - 4x = -x
4y + 2 = 4y + 2
3x - 2 = x
b - b = 2b
correct and which
are not! - GREEN
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Identify which
statements are
correct and which
2x + 3y = 5x
3a + 3b - 2a
= a + 3b
are not! - AMBER
2x + 3y = 6xy
2x + 3y + 4x
7a + 3b
5a + 3b - 5a
= 6x + 3y
= 7a + 3b
= 3b
3a - 3b - 2a
5a + 3b - 5a
4a + 3 - 2a
3a - 3b - 2a
= a - 3b
= a + 3b
= 6a + 3
= 5a - 3b
2x + 3y
4a + 3 + 2a
½ a + 3b - ½ a
½ a + 3b + ½ a
= 2x + 3y
= 6a + 3
= a + 3b
= a + 3b
7a + 3b = 10ab
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Identify which
statements are
correct and which
are not! - RED
x2 + x2 = x4
4a2 + 3b - 4a2
2ab + 3b - 4ab
= a2 + 3b
= 6ab + 3b
2mv + 3mv – 4mv
2y2 - y2 = 2
= 9mv
2mv + 3mv – 4mv 2ab + 3b - 4ab
= mv
= -2ab + 3b
xy + 3xy = 4xy
y + y = 2y
2
2
x2 + x2 = 2x
3xy – 3xy – 4xy 4a2 + 3b - 4a2
= 10xy
2
4mv - 3mv = 1
= 3b
4a2 + 3b - 4a2 3xy – 3xy + 4xy
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= a2 + 3b
= 4xy