Salut !
a.
[tex]2x-2=2\\2x=4\\\frac{2x}{x} =\frac{4}{2}\\x=2[/tex]
b.
[tex]3z-10=11\\3z=21\\\frac{3z}{3} =\frac{21}{3} \\z=7[/tex]
c.
[tex]1-y=0\\y=1[/tex]
d.
[tex]1+5x=-39\\5x=-40\\\frac{5x}{5} =\frac{-40}{5} \\x = -8[/tex]
e.
[tex]2+3z=9\\3z=7\\\frac{3z}{3} =\frac{7}{3} \\z = \frac{7}{3}[/tex]
f.
[tex]6-y=-2.3\\6=y-2.3\\y=8.3[/tex]
g.
[tex]7-3x=-22\\7=-22+3x\\3x=29\\\frac{3x}{3}= \frac{29}{3}\\x=\frac{29}{3}[/tex]
h.
[tex]5+6z=-11\\6z=-16\\\frac{6z}{6} =\frac{-16}{6} \\z = -\frac{8}{3}[/tex]
i.
[tex]-x-9=11.2\\-9=11.2+x\\x=-20.2[/tex]
j.
[tex]9.7y-5.7=-1.7\\9.7y=4\\\frac{9.7y}{9.7} =\frac{4}{9.7} \\y=\frac{4}{9.7}[/tex]
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Salut !
a.
[tex]2x-2=2\\2x=4\\\frac{2x}{x} =\frac{4}{2}\\x=2[/tex]
b.
[tex]3z-10=11\\3z=21\\\frac{3z}{3} =\frac{21}{3} \\z=7[/tex]
c.
[tex]1-y=0\\y=1[/tex]
d.
[tex]1+5x=-39\\5x=-40\\\frac{5x}{5} =\frac{-40}{5} \\x = -8[/tex]
e.
[tex]2+3z=9\\3z=7\\\frac{3z}{3} =\frac{7}{3} \\z = \frac{7}{3}[/tex]
f.
[tex]6-y=-2.3\\6=y-2.3\\y=8.3[/tex]
g.
[tex]7-3x=-22\\7=-22+3x\\3x=29\\\frac{3x}{3}= \frac{29}{3}\\x=\frac{29}{3}[/tex]
h.
[tex]5+6z=-11\\6z=-16\\\frac{6z}{6} =\frac{-16}{6} \\z = -\frac{8}{3}[/tex]
i.
[tex]-x-9=11.2\\-9=11.2+x\\x=-20.2[/tex]
j.
[tex]9.7y-5.7=-1.7\\9.7y=4\\\frac{9.7y}{9.7} =\frac{4}{9.7} \\y=\frac{4}{9.7}[/tex]