Bonsoir,
A) 2x = 13
x = 13/2
S={13/2}
B) 7x = -23
x = -23/7
S={-23/7}
C) -13x = 74
x = -74/13
S={-74/13}
D) -16x = -5
x = 5/16
S={5/16}
E) (2/3)x = 5
x = 15/2
S={15/2}
F) (-5/7)x = 5/6
x = 5/6 * (-7/5)
x = -35/30
x = -7/6
S={-7/6}
G) 2x + 3 = 4
2x = 1
x = 1/2
S={1/2}
H) 7x - 5 = 14
7x = 19
x = 19/7
S={19/7}
I) (-144/81)x + 13 = 1
(-144/81)x = -12
x = -12 * (-81/144)
x = 972/144
x = 243/36
S={243/36}
Bonjour
2x = 13
X = 13/2
7x = -23
X = -23/7
-13x = 74
X = -74/13
-16x = -5
X = -5/-16 = 5/16
(2/3)x = 5
X = 5 *3/2
X = 15/2
(-5/7)x = 5/6
X = 5/6 * -7/5
X = -7/6
2x + 3 = 4
2x = 4-3
X = 1/2
7x-5 = 14
7x = 14+5
X = 19/7
(-144/81)x + 13 = 1
-144/81x = 1-13
-144/81x = -12
X = -12 * -81/144
X = 81/12
X = 27*3/4*3
X = 27/4
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Verified answer
Bonsoir,
A) 2x = 13
x = 13/2
S={13/2}
B) 7x = -23
x = -23/7
S={-23/7}
C) -13x = 74
x = -74/13
S={-74/13}
D) -16x = -5
x = 5/16
S={5/16}
E) (2/3)x = 5
x = 15/2
S={15/2}
F) (-5/7)x = 5/6
x = 5/6 * (-7/5)
x = -35/30
x = -7/6
S={-7/6}
G) 2x + 3 = 4
2x = 1
x = 1/2
S={1/2}
H) 7x - 5 = 14
7x = 19
x = 19/7
S={19/7}
I) (-144/81)x + 13 = 1
(-144/81)x = -12
x = -12 * (-81/144)
x = 972/144
x = 243/36
S={243/36}
Verified answer
Bonjour
2x = 13
X = 13/2
7x = -23
X = -23/7
-13x = 74
X = -74/13
-16x = -5
X = -5/-16 = 5/16
(2/3)x = 5
X = 5 *3/2
X = 15/2
(-5/7)x = 5/6
X = 5/6 * -7/5
X = -7/6
2x + 3 = 4
2x = 4-3
2x = 1
X = 1/2
7x-5 = 14
7x = 14+5
7x = 19
X = 19/7
(-144/81)x + 13 = 1
-144/81x = 1-13
-144/81x = -12
X = -12 * -81/144
X = 81/12
X = 27*3/4*3
X = 27/4