equation

1. 7-y=3
7-y+y=3+y
7=3+y
7-3=y
y=4
2. 3-4x=7
3-3-4x=7-3
-4x=4
-4x/-4 =4/-4
x=-1

1. s=2t, and t=5
sub. t=5
s=2(5)
=10

2. w=g+3 and g=2
sub g=2,
w=(2)+3
=5

1.
7-y=3
-y=3-7
-y=-4
y=4

2.
3-4x=7
-4x=7-3
-4x=4
x=-1

using the method of substitution, find thee value of the remaining unknown in ech of the following formulas.
1. s=2t if t =5
sub. t=5
2t=s
2(5)=10

2. w=g+3 if g=2
sub. g=2
g+3=w
2+3=5

1.)7-y=3
-y=-4
y=4

2.)3-4x=7
-4x=4
x=-1

using the method of substitution, find thee value of the remaining unknown in each of the following formulas.
1.)s=2t if t =5
s=2(5)
s=10

2.)w=g+3 if g=2
w=2+3
w=5

希望幫到你啦=]