1. (3х+у)–(-х–4у)
3х+у−(−х)−(−4у)
3х+5у−(−х)
4х+5у
2. (m+3)–(6m+5)–(m–1)
−5m+3−5−(m−1)
−5m−2−m+1
−6m−1
3. (х + 6у) – (8х – 7у)
х+6у−8х+7у
−7х+6у+7у
−7х+13у
4.(x – y) + (x + y) – (2x + y)
2x−y+y−(2x+y)
2x−(2x+y)
2x−2x−y=−y
5. (m + n) – (m – n)
m+n−m+n
n+n=2n
6.(0,2x – 3) – (x – 2) – (0,4x – 1)
0.2x−3−x+2−(0.4x−1)
−0.8x−1−(0.4x−1)
−0.8x−1−0.4x+1
−1.2x−1+1=−1.2x
Пошаговое объяснение:
1. (3х+у)–(-х–4у)
3х+у−(−х)−(−4у)
3х+5у−(−х)
4х+5у
2. (m+3)–(6m+5)–(m–1)
−5m+3−5−(m−1)
−5m−2−m+1
−6m−1
3. (х + 6у) – (8х – 7у)
х+6у−8х+7у
−7х+6у+7у
−7х+13у
4.(x – y) + (x + y) – (2x + y)
2x−y+y−(2x+y)
2x−(2x+y)
2x−2x−y=−y
5. (m + n) – (m – n)
m+n−m+n
n+n=2n
6.(0,2x – 3) – (x – 2) – (0,4x – 1)
0.2x−3−x+2−(0.4x−1)
−0.8x−1−(0.4x−1)
−0.8x−1−0.4x+1
−1.2x−1+1=−1.2x
Пошаговое объяснение: