Question

solve the following equations by trial and error method.
15. Solve the foll
a. 7x = 49
b. 2y - 1 = 19
c. 63+5=29
d. a + 7 = 11​

Answer 1

Answer:

a) 7 × x = 49

X = 49 ÷ 7

X = 7

b) 2 × y - 1 = 19

2 × y = 19 + 1

2 × y = 20

y = 20 ÷ 2

y = 10

c) 63 + 5 = 29 - this question is written wrong

d) a + 7 = 11

a = 11 - 7

a = 4

Answer 2

Answer:

1, 7×7=49

2, 20-1 = 19

3, 63 - 34 = 29

4, 4+ 7= 11