Question

Calcule as equações
2x+5=10+30-3x
4y-5=2y+25
8y+10=74
10+5x/2=20
-7x+10=1/2

Answer 1

1) 2x+5 = 10+30-3x
2x+3x = 40-5
5x = 35
x = 35 : 5
× = 7

2) 4y-5 = 2y+25
4y-2y = 25+5
2y = 30
y = 30 : 2
y = 15

3)8y+10 = 74
8y = 74-10
8y = 64
y = 64 : 8
y = 8

4) 10+5x/2 = 20
5) -7x+10 = 1/2