Question

Упростите выражение 1) 3 (х + 5) + 4х 3) 9 (х - 7) + 6х 5) 2 ( 13 + х) - 15 2) 8 (7 + х) - 3х 4) 5 (х + 8) - 11 6) 6 ( х + 5) + 2х

Answer 1

1)3х+15+4х=7х+15
2)56+8х-3х=56+5х
3)9х-63+6х=15х-63
4)5х+40-11=5х+29
5)26+2х-15=11+2х
6)6х+30+2х=8х+30

Answer 2

1) 7х+15
2) 57+5х
3) 15х-63
4) 5х+29

Answer 3

1. 3(х + 5) + 4х = 3х + 15 + 4х = 7х + 15
2. 8(7 + х) - 3х = 56 + 8х - 3х = 5х + 56
3. 2(13 + х) - 15 = 26 + 2х - 15 = 2х + 11
4. 5(х + 8) - 11 = 5х + 40 - 11 = 5х + 29
5. 9(х - 7) + 6х = 9х - 63 + 6х = 15х - 63
6. 6(х + 5) + 2х = 6х + 30 + 2х = 8х + 30