1) 8x-9=33-4x
2) 5x+3=15-x
3) 2x+15=27-4x
4) 7x+11=3x+27
Answers
Answer:
)
1) \pmb{\sf{8x~-~9~=~33~-~4x}}
8x − 9 = 33 − 4x
8x − 9 = 33 − 4x
~~~~ {\sf{8x~-~9~=~33~-~4x}}8x − 9 = 33 − 4x
~~~~ {\sf{8x~+~4x~=~33~+~9}}8x + 4x = 33 + 9
~~~~ {\sf{12x~=~42}}12x = 42
~~~~ {\sf{x~=~\cancel\dfrac{42}{12}}}x =
12
42
~~~~ \boxed{\sf{x~=~3.5}}
x = 3.5
~
\pmb{\bf{2)}}
2)
2) \pmb{\sf{5x~+~3~=~15~-~x}}
5x + 3 = 15 − x
5x + 3 = 15 − x
~~~~ {\sf{5x~+~3~=~15~-~x}}5x + 3 = 15 − x
~~~~ {\sf{5x~+~x~=~15~-~3}}5x + x = 15 − 3
~~~~ {\sf{6x~=~12}}6x = 12
~~~~ {\sf{x~=~\cancel\dfrac{12}{6}}}x =
6
12
~~~~ \boxed{\sf{x~=~2}}
x = 2
~
\pmb{\bf{3)}}
3)
3) \pmb{\sf{2x~+~15~=~27~-~4x}}
2x + 15 = 27 − 4x
2x + 15 = 27 − 4x
~~~~ {\sf{2x~+~15~=~27~-~4x}}2x + 15 = 27 − 4x
~~~~ {\sf{2x~+~4x~=~27~-~15}}2x + 4x = 27 − 15
~~~~ {\sf{6x~=~12}}6x = 12
~~~~ {\sf{x~=~\cancel\dfrac{12}{6}}}x =
6
12
~~~~ \boxed{\sf{x~=~2}}
x = 2
~
\pmb{\bf{4)}}
4)
4) \pmb{\sf{7x~+~11~=~3x~+~27}}
7x + 11 = 3x + 27
7x + 11 = 3x + 27
~~~~ {\sf{7x~+~11~=~3x~+~27}}7x + 11 = 3x + 27
~~~~ {\sf{7x~-~3x~=~27~-~11}}7x − 3x = 27 − 11
~~~~ {\sf{4x~=~16}}4x = 16
~~~~ {\sf{x~=~\cancel\dfrac{16}{4}}}x =
4
16
~~~~ \boxed{\sf{x~=~4}}
x = 4