what is the equation of this questions:
(1) 2y+3=10
(2)9x+4=49
(3)10z+9=19
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Solution
1.)2y+3=10
{{2y = 10 - 3}}⇒2y=10−3
{{2y = 7}}⇒2y=7
{{y = \frac{7}{2} }}⇒y=
2
7
{{2.)\:9x + 4 = 49}}2.)9x+4=49
{{9x = 49 - 4}}⇒9x=49−4
{{9x = 45}}⇒9x=45
{{x = \frac{45}{9} }}⇒x=
9
45
{{x = 5 }}⇒x=5
{{3.)\:10z + 9 = 19}}3.)10z+9=19
{{10z = 19 - 9}}⇒10z=19−9
{{10z = 10}}⇒10z=10
{{z = \frac{10}{10} }}⇒z=
10
10
{{z = 1 }}⇒z=1
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