Question

みゅう:)

この中で間違ってる問題ってありますか？

Solve the following equations.
(1) 5 - (x − 1) = 4
5-x+1=4
6- x = 4
(3)
(5)
(7)
-x = 4-6
-X = -2
7x - (3x) = 141
7x-3+x=141
8x-3
8xx
3(x − 2) = −2 − x
3x-6=-2-x
3x + x
=141
=141+3
= 18⁰
=-2+6
4x = -4
3(4x) + 2(x - 1) = 14
12-3x + 2x - 2 = 14
10-x
= 14
=14-10
x = -4
(9) 3(1-x)+2(4x + 7) = 12
3-3x + √x + 14 = 12
=12
=12-17
17+5x
5x
(11) 5(2-x)+2(3x + 1) ='6
10 - 5x+ 6x +2=6
12 + bc = 6
x = 6-12
x = -6
(13) 19(x - 2) = 7(2 − x)
192c-38:14-7x
19x +7x² = 14 +38
26x=52
(15) 3(2+x) * 4 ≤ 94 − x
6 + 3x -4 = 94-x
94-2
2+3x
94-2
3x+241
92
(17) 4-(x - 52)=2x - 79
4-x+52=2x-179
56-x
=2x-79
-x-2x =-79-56
3x
-3x₂²-132
(19) 3(2-x) + 2(3x + 4) = −10
6-3x+6₂+ 8 = -10
14+3x
-10
=-10-14
-
3x=24
x = 8
(2) 3 - (2x − 8) = −3
3-2x+8=-3
11-2x-3
-2x = -3 -11
-2x = -14
(4) 2(x − 9) = x + 10
2x9 = x + 10
2x -x = 10 + 9
x = 19
(6)
2(9 + x) + 4 = 55 - x
18+2x+4:55-x
22+2x=55-x
2x+2₂² = 33
(8) 7(x - 2) = 8(x − 3)
¹7x-14 = 8x - 24
¹7x-8₂ = -24 +14
=-10
-x
x = 10
(10) 6(x+5) = 9x + 6
6e +30= 9x+6
bx-9x
=55-22
=6-30
- 3x = -24
x
8
(12) 7(x+13) = 4(x +19)
7x + 91 = 4₂c + 76
7x-4%3x
=76-91
=-15
= -5
(14) 4x -3x - 5) = 23
4x -3x+15=23
x +15
= 23
3
-15
x
(16) 3(x - 5) – Š(13 – x) = 0
32-15-65+50c=0
82-808x8+80
8*
68+58x=696
126x=696
11.6
58
(18) 6x = 602(12-x)
6₂ = 696-58x
4x + 9₂ =
»
(20) 4(x+3) - 9(8 - x) = 83
42 +12-237 + 9x=83₁
・83-12-27
-
13x =71-27
x
1/14