Question

151b-74a = 76 x (12)
Also, given a + b = 12
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Answer 1

Answer:

a=4 and b=8

Step-by-step explanation:

a+b=12.........equation 1

151b-74a=76*12 equation 2

now we can add it by making a coefficient equal of a

(b+a=12)by 74    = 74b+74a=888

151b-74a=912   =  151b-74a=912

                        =       225b=1800

                         =         b=1800/225

                          =          b=8

put b=8 in equation 1

a+b=12

a+8=12

a=12-8

a=4